Alphabetical List of Conversion Factors - sengpielaudio
 
Alphabetical List of Conversion Factors
A
 
* Acre (US) = 0.0015625 square miles, 10 square chains (Gunter's), 160 square rods (square perches), 4840 square yards, 43,560 square feet, 100,000 square links (Gunter's), 0.4046873 hectares (square hectometers), 40.46873 ares (square dekameters), 4046.873 square meters.
* Acre (Br) = 4 Br roods, 4840 square Br yards, 0.4046849 hectares (square hectometers), 4046.849 square meters.
* Acre Foot (US) = 43,560 cubic feet, 1,613.33 cubic yards, 325,872 gallons, 1233.5 cubic meters, 1,233,489 liters.
* Acres inch = 27,154 gallons.
* Acres inch per hour = 452.5 GPM = 452.5 Gallons Per Minute
* Angstrom Unit = 3.937×10-9 inches, 0.003937 millionths of an inches, 1×10-10 meters, 1×10-8 centimeters, 1×10-4 microns, 0.1 milli-micron (micro-millimeter), 100 millionth microns (micro-microns).
* Angular mil = 1×10-3 radians.
* Are = 3.8610×10-6 square mile, 0.02471044 acre, 119.60 square yards, 1076.4 square feet, 0.01 hectare, 1 square dekameter, 100 square meters.
* Astronomical Unit = 1.495×108 kilometers, 0.48481×10-6 parsecs, 1.5812×10-6 light years.
* Atmosphere (pressure) = Pressure exerted by 76 cm of Hg at density 13.5951 grams per cubic centimeter at g = 980.665 centimeters per square second, 0.0073480 ton (2000 pound) per square inches, 1.0133 bars, 1.0581 tons (2000 pound) per square foot, 14.696 pounds per square inches, 29.921 inches of Hg at 32 degrees F, 33.899 feet of water at 39.1 degrees F, 760 millimeters of Hg at 0 degrees C, 1033.2 grams per square centimeter, 2116.2 pounds per square foot, 1.0332×104 kilograms per square meter, 1.01325×106 dynes per square centimeter, 101.325 kPascal.

B

* Bag (Br) = 3 dry bushels, 0.109107 cubic meter.
* Bar (pressure) = 0.98692 atmosphere, 14.504 pounds per square inches, 1.01971×104 kilograms per square meter, 1.000×106 dynes per square centimeter.
* Barye (pressure) = 1 dyne per square centimeter.
* Barleycorn (Br) = 1/3 inches, 0.84667 centimeters.
* Barn = 1×10 -3 radians, 1×1024 square centimeters.
* Barrel (US dry) = 3.281 bushels, 105.0 dry quarts, 7056 cubic inches except cranberry barrel which equals 5826 cubic inches, 0.11562 cubic meter.
* Barrel (US liquid) = 42 gallons (oil), 31.5 gallons (beer), 30.0 gallons (wine), 0.11924 cubic meter.
* Barrel (Br dry) = 36 Br gallons, 0.16366 cubic meter.
* Board Foot = 1/12 cubic foot, 144 cubic inches (1 ft x 1 ft x 1 in), 2359.8 cubic centimeters.
* Bolt (US Cloth) = 120 linear feet, 36.576 meters.
* British Thermal Unit (BTU, mean) = 0.25198 kilogram calorie (large mean calorie), 777.97 foot pounds, 3.9292×10-4 horsepower hour, 2.930×10-4 Kilowatt hour, 0.2930 watt hour, 10.409 liter atmospheres, 107.56 kilogram meters, 251.98 mean gram calories, 1054.8 absolute joules, 0.3676 cubic foot atmospheres, 2.5030×104 foot poundals, 1.0548×1010 ergs.
* BTU (39 degrees F) = 1060.4 absolute joules.
* BTU (60 degrees F) = 1054.6 absolute joules.
* BTU per Minute = 12.96 foot pounds per second, 0.02356 horsepower, 0.01757 kilowatts, 17.57 watts.
* Bucket (Br dry) = 4 Br gallons, 1.8184×104 cubic centimeters.
* Bushel (US dry) = 0.304785 barrel, 0.96895 Br bushel, 1.2444 cubic feet, 4 pecks, 32 dry quarts, 64 dry pints, 2150.42 cubic inches, 0.035239 cubic meter, 0.35238 hectoliter, 3.5238 dekaliters, 35.238 liters, 3.5239×104 cubic centimeters.
* Bushel (Br dry) = 1/8 Br quarter, 1/3 Br bag, 1.03205 bushels, 1.2843 cubic feet, 8 Br gallons, 2219.3 cubic inches, 0.363677 hectoliter, 3.63677 dekaliters, 36.3677 liters, 3.6369×104 cubic centimeters.
* Butt (Br dry) = 126 gallons, 0.57281 cubic meter.

C

* Cable Length = 720 feet, 219.46 meters.
* Calorie - see gram calorie or kilogram calorie.
* Carat = 3.08647 grains, 205.6 milligrams.
* Cental = 100 pounds, 45.359 kilograms.
* Centare = 1.196 square yards, 10.764 square feet, 1550 square inches, 0.01 are, 1 square meter.
* Centigram = 0.1543236 grain, 0.01 gram.
* Centiliter = 0.33815 fluid ounce, 0.61025 cubic inches, 2.705179 fluid drams, 0.01 liter, 10.000027 cubic centimeters.
* Centimeter = 0.01093611 yard, 0.01093614 Br yard, 0.032808 foot, 0.39370 inches, 4.4330 linges (Paris lines), 393.70 mils, 0.01 meter, 10 millimeters, 1×104 microns, 1×107 milli-microns (micro-millimeters) 1×108 Angstroms.
* Centimeter-dyne = See erg.
* Centipoise (viscosity) = 0.01 poise, centistokes x density at a given temperature.
* Centistoke (viscosity) = 0.01 stoke.
* Chain (Engineer's or Ramden's) = 100 feet, 100 links of 1 foot, 30.4801 meters.
* Chain (Surveyor's or Gunter's) = 0.1 furlong, 0.0125 mile, 4 rods, 22 yards, 66 feet, 100 links, 792 inches, 20.117 meters, 2011.7 centimeters.
* Chaldron (US dry) = 36 bushels (variable), 1.2686 cubic meters.
* Chaldron (Br dry) = 32 Br bushels (variable), 1.1638 cubic meters.
* Cheval-vapeur = for electrical purposes, usually 736 watts.
* Cheval-vapeur heure = 2.6478×106 joules (absolute).
* Circle = 2·Pi· r, 6.28319 radians, 12 signs, 360 degrees.
* Circular inch = area of a circle the diameter of which is one inches, 0.78540 square inches, 5.0671 square centimeters.
* Circular mil = area of a circle the diameter of which is one mil or 1/1000 inches, 7.854×10-7 square inches, 0.78540 square mil, 5.0671 square centimeter, 5.0671×10-4 square millimeter.
* Circular millimeter = area of a circle the diameter of which is one millimeter, 0.0078450 square centimeter, 0.78540 square millimeter.
* Circumference = 2·Pi·r, 6.28319 radians, 360 degrees, 400 grades, 2.1600×104 minutes, 1.296000×106 seconds.
* Clove or customary stone (Br) = 8 pounds, 3.6287 kilograms.
* Coomb (Br dry) = 4 bushels, 0.14548 cubic meter.
* Cord = 8 cord feet, 128 cubic feet (8 x 4 x 4), 3.625 cubic meters.
* Cord foot = 1/8 cord, 16 cubic feet (4 x 4 x 1).
* Cubic centimeter = 1.3079×10-6 cubic yard, 2.83776×10-6 bushel, 2.7496×10-6 Br bushel, 3.531445×10-6 cubic foot, 3.531477×10-6 Br cubic foot, 2.6417×10-4 gallon, 2.1997×10-4 Br gallon, 4.2376×10-4 board foot, 0.0010567 liquid quart, 8.7988×10-4 liquid Br quart, 9.0808×10-4 dry quart, 0.0021134 liquid pint, 0.0018162 dry pint, 0.033814 fluid ounce, 0.035195 fluid Br ounce, 0.061023 cubic inches, 0.27051 fluid dram, 0.38257 fluid Br drachm, 16.231 minims, 16.894 Br minims, 1×10-6 cubic meter, 9.9997×10-4 liter, 0.001 cubic decimeter, 0.99997 milliliter, 1000 cubic millimeters.
* Cubic centimeter-atmosphere (normal) = 0.101325 joule (absolute).
* Cubic Decimeter = 0.0013079 cubic yard, 0.035314 cubic foot, 61.023 cubic inches, 0.001 cubic meter, 0.99997 liter, 1000 cubic centimeters.
* Cubic Dekameter = 1000 cubic meters.
* Cubic Foot (US) = 1/128 cord, 0.01 Br register ton, 1/27 cubic yard, 1/16 cord-foot, 0.80357 bushel, 0.77861 Br bushel, 7.481 gallons, 6.229 Br gallons, 12 board feet, 25.714 dry quarts, 29.922 liquid quarts, 59.844 liquid pints, 1728 cubic inches, 0.02831701 cubic meter, 28.316 liters, 2.8317×104 cubic centimeters.
* Cubic foot (BR) = 0.02831677 cubic meter, 2.831677×104 cubic centimeters.
* Cubic foot (of water) = 62.4 pounds, 999.8 ounces, 28.315 kilograms.
* Cubic foot-atmosphere = 2.7203 BTU (mean), 28.313 liter-atmosphere, 292.59 kilogram-meters, 680.74 gram-calories (mean), 2116.3 foot pounds, 2869.4 joules (absolute).
* Cubic inches (US) = 2.143347×10-6 cubic yard, 4.65025×10-4 bushel, 5.78704×10-4 cubic foot, 0.00186010 peck, 0.0043290 gallon, 1/144 board foot, 0.014881 dry quart, 0.017316 liquid quart, 0.0297616 dry pint, 0.5541 fluid ounce, 4.4329 fluid drams, 1.6387162×10-6 cubic meter, 0.0163868 liter, 1.63868 centiliters, 16.3868 milliliters, 16.387162 cubic centimeters, 1.6387162×104 cubic millimeters.
* Cubic inch (Br) = 4.5081×10-4 Br bushel, 5.7870×10-4 Br cubic foot, 0.0018031 Br peck, 0.003606 Br gallon, 16.3870253 cubic centimeters.
* Cubic Hectometer = 1×106 cubic meters.
* Cubic Kilometer = 1×109 cubic meters.
* Cubic Meter = 0.2759 cord, 1.3079428 cubic yards, 1.307954 cubic Br yards, 28.3776 bushels, 35.314445 cubic feet, 35.31477 Br cubic feet, 264.173 gallons, 1056.7 liquid quarts, 2113.4 liquid pints, 6.1023×104 cubic inches, 1 stere, 999.973 liters, 1000 cubic decimeters, 1×106 cubic centimeters, 1x109 cubic millimeters.
* Cubic Millimeter = 6.1023×10-6 cubic inches, 0.01623 minim, 0.01689 BR minim, 1×10-9 cubic meter, 0.001 cubic centimeter.
* Cubic Yard (US) = 27 cubic feet, 202.0 gallons, 168.17 Br gallons, 807.9 liquid quarts, 1616 liquid pints, 4.6656×104 cubic inches, 0.76455285 cubic meter, 764.54 liters, 7.6455945×105 cubic centimeters.
* Cubic Yard (Br) = 27 cubic feet, 0.76455945 cubic meter.
* Cubit = 18 inches, 45.72 centimeters.

D

* Dalton = 1/16 the mass of an atom of oxygen, 1.650×10-24 gram.
* Day (tropical mean solar) = 24 mean solar hours, 1440 mean solar minutes, 8.6400×104 mean solar seconds.
* Day (sidereal) = 8.6164×104 mean solar seconds.
* Decigram = 1.543236 grains, 0.1 gram.
* Deciliter = 0.176 BR pint, 3.38147 fluid ounces, 0.1 liter, 100.0027 cubic centimeter.
* Decimeter = 0.3280833 foot, 0.3280843 BR foot, 3.93700 inches, 3.937011 BR inches, 0.1 meter.
* Decistere = 0.1 stere (cubic meter).
* Degree (angle) = 1/360 circumference (revolution), 1/90 quadrant, 0.017453 radian, 60 minutes, 3600 seconds.
* Degree (F) = 9C/5+32
* Degree (C) = 5F/9-17.7778
* Degree (absolute, K) = C+273.15
* Dekagram = 0.35273957 avoirdupois ounce, 5.64383 avoirdupois drams, 0.01 kilogram, 10 grams.
* Dekaliter = 0.28378 bushel, 0.27497 Br bushel, 1.13513 pecks, 9.08102 dry quarts, 18.162 dry pints, 10 liters, 10.00027 cubic decimeters.
* Dekameter = 1.98838 rods, 10.93611 yards, 10.93614 Br yards, 393.70 inches, 10 meters.
* Dekastere = 10 steres (cubic meters).
* Drachm (fluid Br) = 1/8 fluid Br ounce, 60 minims, 3.5515 cubic centimeters.
* Dram (apothecaries or troy) = 1 Br drachm, 0.008571429 avoirdupois pound, 1/96 apothecary or troy pound, 0.1371429 avoirdupois ounce, 1/8 apothecary or troy ounce, 2.194286 avoirdupois drams, 2.5 pennyweights, 3 scruples, 60 grains, 3.8879351 grams.
* Dram (avoirdupois) = 0.0047471788 apothecary or troy pound, 1/256 avoirdupois pound, 0.056966146 apothecary or troy ounce, 0.0625 avoirdupois ounce, 0.4557292 apothecary or troy dram, 1.139323 pennyweights, 1.3671875 scruples, 27.34375 grains, 1.771845 grams, 1.771845 milligrams.
* Dram (fluid) = 0.00390625 liquid quart, 0.0078125 liquid pint, 0.03125 gill, 1/8 fluid ounce, 0.225586 cubic inches, 60 minims, 3.6966 milliliters, 3.6967 cubic centimeters.
* Dyne (force) = 2.2481×10-6 pound weight, 7.2330×10-6 poundal, 0.0010197 gram weight, 0.015737 grain weight. (Assumes G=980.665 cm / second squared).

E

* Ell = 45 inches, 114.30 centimeters.
* Em, Pica = 1/6 inches, 042333 centimeter.
* Erg = 2.3889×10-11 kilogram calorie (mean), 9.4805×10-11 BTU (mean), 1.0197 10-8 kilogram-meter, 2.3889 10-8 gram calorie (mean), 7.3756 10-8 foot pound, 1×10-7 joule, 2.3730×106 foot poundal, 0.0010197 gram centimeter, 1 dyne-centimeter.

F

* Fathom = 6 feet, 1.828804 meters.
* Fermi = 1×10-15 meter.
* Firkin = 9 gallons, 34.068 liters.
* Foot (US) = 1.6447×10-4 nautical mile, 1.893939×10-4 statute mile, 0.00151515 furlong, 0.0151515 Gunter's chain, 0.0606061 rod, 1/6 fathom, 1/3 yard, 12 inches, 0.3048 meter, 30.48 centimeters, 473404 wavelengths of red line of cadmium.
* Foot (Br) = 0.4 Br pace, 30.48 centimeters.
* Foot (Paris) = 1 Pied.
* Foot of water (pressure) at 4 degrees C = 0.029499 atmosphere, 0.43352 pound per square inches, 0.88265 inches of Hg at 32 degrees F, 62.426 pounds per square foot, 304.79 kilograms per square meter.
* Foot Pound = 3.7662×10-7 kilowatt-hour, 5.0505×10-7 horsepower-hour, 3.2389×10-4 kilogram-calorie (mean), 3.7662×10-4 watt-hour, 4.7253×10-4 cubic foot-atmosphere, 0.0012854 BTU (mean), 0.013381 liter-atmosphere, 0.138255 kilogram-meter, 0.32389 gram-calorie (mean), 1.35582 joule (absolute), 32.174 foot poundals, 1.3825×104 gram centimeters, 1.35582×107 ergs.
* Foot Pondal = 3.9952×10-6 BTU (mean), 4.1589×10-4 liter-atmosphere (normal), 0.0042972 kilogram-meter, 0.010067 gram-calorie, 0.031081 foot-pound, 0.042140 joule, 4.21402×105 ergs.
* Furlong (US or Br) = 1/8 mile, 10 Gunter's chains, 40 rods, 220 yards, 660 feet, 201.168 meters.

G

* Gallon (US) = at 62 degrees F weighs 3.7820 kilogram or 8.337 avoirdupois lbs, 0.004951 cubic yard, 0.031746 liquid barrel, 0.13368 cubic foot, 0.83268 Br gallon, 4 quarts, 8 pints, 32 gills, 128 ounces, 231.00 cubic inches, 6.144×104 minims, 0.0037854 cubic meter, 3.7853 liters, 3785.4 cubic centimeters.
* Gallon (Br) = at 62 degrees F weighs 10 avoirdupois pounds, 0.02778 dry Br barrel, 1/8 dry Br bushel, 0.16054 cubic foot, 0.5 Br peck, 1.20094 gallons, 4 Br quarts, 8 Br pints, 32 Br gills, 160 Br ounces, 277.3 cubic inches, 4.54596 liters, 4545.96 cubic centimeters.
* Geepound = See slug.
* Gill (US) = 1/32 gallon, 1/8 quart, pint, 4 fluid ounces, 7.21875 cubic inches, 32 drams, 1920 minims, 0.118292 liters, 118.295 cubic centimeters.
* Gill (Br) = 1/32 Br gallon, 1/4 Br pint, 5 fluid Br ounces, 0.14206 liter, 142.07 cubic centimeters.
* Grade = 1/400 circumference, 0.0157079 radian, 0.9 degree, 100 centesimal minutes.
* Grain = 1/7000 avoirdupois pound, 1/5760 apothecary or troy pound, 0.0022857 avoirdupois ounce, 0.0020833 apothecary or troy ounce, 0.03657143 avoirdupois dram, 0.016667 apothecary or troy dram, 0.0416667 troy pennyweight, 0.05000 apothecary scruple, 0.064798918 gram, 0.3240 metric carat, 64.798918 milligram.
* Gram = 0.00220462 avoirdupois pound, 0.00267923 apothecary or troy pound, 0.0352739 avoirdupois ounce, 0.0321507 apothecary or troy ounce, 0.564383 avoirdupois dram, 0.257206 apothecary or troy dram, 0.6430149 pennyweight, 0.771618 scruple, 15.4324 grains, 1×10-6 metric ton, 1×10-4 myriagram, 0.001 kilogram, 5 metric carats, 1000 milligrams, 1×106 microgram.
* Gram-Calorie (mean) = 1.5593×10-6 horse power hours, 0.001 kilogram calorie, 0.0011628 watt-hour, 0.001459 cubic foot atmosphere, 0.0039685 BTU (mean), 0.041311 liter-atmosphere, 0.42685 kilogram-meter, 3.0874 foot-pounds, 4.186 joules (absolute), 99.334 foot-poundals.
* Gram-calorie (15°C) = 4.185 joules (absolute).
* Gram-calorie (20°C) = 4.181 joules (absolute).
* Gram-centimeter = 2.3427 10-8 kilogram-calorie (mean), 9.2972 10-8 BTU (mean), 1×10-6 kilogram-meter, 2.3427×10-6 gram-calorie (mean), 7.233×10-6 foot-pound, 9.80665×10-6 joule (absolute), 980.7 ergs.

H

* Hand = 4 inches, 10.160 centimeters.
* Hectare = 2.471044 acres, 2.471058 Br acres, 395.367 square rods, 1.195985×104 square yards, 1.0764×105 square feet, 100 ares, 1×104 square meters.
* Hectogram = 3.52739 avoirdupois ounces, 100 grams.
* Hectoliter = 2.8378 bushels, 2.7497 Br bushels, 11.3513 pecks, 100 liters.
* Hectometer = 19.8838 rods, 109.3611 yards, 109.3614 Br yards, 328.08 feet, 100 meters.
* Hectowatt = 100 watts.
* Hemisphere = 0.5 sphere, 4 spherical right angles, 6.2832 steradians.
* Hogshead (Br) = 63 Br gallons, 10.114 cubic feet, 0.28640 cubic meters.
* Hogshead (US) = 63 gallons, 8.4218 cubic feet, 0.23848 cubic meters.
* Horsepower = 0.70696 BTU (mean), 0.7452 kilowatt (g=980), 0.74570 kilowatt (g=980.665), 1.0139 horse power (metric) or cheval-vapeur, 10.688 kilogram-calories (mean) per minute, 42.418 BTU (mean) per minute, 550 foot-pounds per second, 745.2 watts (g=908), 745.70 watts (g=980.665), 3.3000×104 foot-pounds per minute.
* Horsepower, electrical (US and BR) = 746.00 watt (absolute) commonly used in rating electrical machinery.
* Horsepower, metric (cheval vapeur) = 0.98632 horsepower (US), 75 kilogram-meters per second, 735.399 watts, 3.2549×104 foot-pounds per minute.
* Horsepower-hour = 0.7457 kilowatt-hour, 641.3 kilogram-calories (mean), 745.7 watt-hours, 2545.0 BTU (mean), 2.7374×105 kilogram-meters, 1.9800×106 foot-pounds, 2.6845×106 joules (absolute).
* Horsepower-hour (electrical, US and BR) = 2.6856×106 joules (absolute).
* Hour (tropical mean solar) = 0.0059524 week, 0.041667 mean solar day, 60 mean solar minutes, 3600 mean solar seconds.
* Hundredweight (short) = 100 pounds, 0.44643 long ton, 0.05 short ton, 4 Br quarters, 1600 avoirdupois ounces, 0.0453592 metric ton, 45.3592 kilograms.
* Hundredweight (long) = 112 pounds, 0.05 long ton, 4 Br quarters, 50.8023 kilograms.

I

* inches (US) = 1.57828×10-6 mile, 0.00126263 Gunter's chain, 0.00505051 rod, 1/36 yard, 1/12 foot, 0.126263 Gunter's link, 72 points (printer's type), 1000 mils, 2.54 centimeters, 25.4 millimeters, 2.54×108 Angstrom unit, 39450.33 wave lengths of red line of cadmium.
* inches (Br) = 1/36 Br yard, 1/9 Br linear quarter, 2.54 centimeters, 25.4 millimeter.
* inches (Paris) = 1 Pouce.
* inches of Hg (pressure) at 32 degrees F = 0.033421 atmosphere, 0.49116 pound per square inches, 1.13299 feet of water at 39.1 degrees F, 13.595 inches of water at 4 degrees C, 70.727 pounds per square foot, 345.31 kilograms per square meter, 3.38639×104 dynes per square centimeter.
* inches of water (pressure) at 4 degrees C = 0.0024583 atmosphere, 0.036136 pounds per square inches, 0.07 3554 inches of Hg, 0.57818 ounce per square inches, 5.2022 pounds per square foot, 25.399 kilograms per square meter, 2490.82 dynes per square centimeter.

J

* Joule (absolute) = 2.778×10-7 kilowatt-hour, 3.725×10-7 horse power-hour, 2.3889×10-4 kilogram-calorie (mean), 2.778×10-4 watt-hour, 3.485×10-4 cubic foot-atmosphere, 9.480×10-4 BTU (mean), 0.009869 liter-atmosphere, 0.10197 kilogram-meter, 0.23889 gram-calorie (mean), 0.23895 gram-calorie at 15°C, 0.23918 gram-calorie at 20°C, 0.73756 foot-pound; 0.999680 joule (International), 1 watt-second, 1 newton-meter, 23.730 foot-poundals, 1.0197×104 gram-centimeters; 1×107 ergs, 1×107 dyne-centimeter.
* Joule (International) = 1.00032 joule (absolute).

K

* Kilderkin = 18 Br gallons, 0.081830 cubic meter.
* Kilogram = 9.842064×10-4 long ton, 0.0011023112 short ton, 0.001 metric ton, 0.019684 long hundredweight, 0.022046223 short hundredweight, 0.07874 Br quarter, 2.2046223 avoirdupois pounds, 2.6792285 apothecary or troy pounds, 32.150742 apothecary or troy ounces, 35.273957 avoirdupois ounces, 257.21 apothecary or troy dram, 564.38 avoirdupois dram, 643.01 pennyweight, 771.62 scruples, 1.54324×104 grains, 1000 grams.
* Kilogram-calorie or large calorie (mean) = 0.0011628 kilowatt-hour, 0.0015593 horse power-hour, 1.1628 watt-hour, 3.9685 BTU (mean), 426.85 kilogram-meters, 1000 small or gram-calories, 3087.4 foot-pounds, 4186 joules, 4.2686×107 gram-centimeters, 4.186×1010 ergs.
* Kilogram-meter = 2.7235×10-6 kilowatt hour, 3.6530×10-6 horse power-hour, 0.0027235 watt-hour, 0.0034177 cubic foot-atmosphere, 0.0092972 BTU (mean), 0.096782 liter-atmosphere, 2.3427 gram-calories (mean), 7.2330 foot-pounds, 9.80665 joules (absolute); 232.71 foot-poundals, 1×105 gram-centimeters, 9.80665×107 ergs.
* Kiloliter = 1.3080 cubic yards, 35.316 cubic feet, 264.18 gallons, 1.000027 cubic meters, 1000 liters.
* Kilometer = 1.0567×10-13 light year, 0.53961 nautical mile, 0.62137 statute mile, 1093.6 yards, 3280.8 feet, 0.1 myriameter, 1000 meters, 1×105 centimeters.
* KiloPascal = 9.869×10-3 Standard Atmospheres, 0.14515 psi.
* Kilowatt = 0.23889 kilogram-calorie (mean) per second, 0.94827 BTU (mean), 1.3410 horsepower, 1.3597 horse power (metric), 14.333 kilogram-calories (mean) per minute, 56.896 BTU (mean) per minute, 737.56 foot-pounds per second, 1000 watts, 2.6552×106 foot-pounds per hour.
* Kilowatt-hour = 1.3410 horse power-hours; 1000 watt-hours, 3413.0 BTU (mean), 3.6710×105 kilogram-meters, 8.6001×105 gram-calories (mean) 2.6552×106 foot-pounds, 3.6000×106 joules (absolute).
* Knot (as a unit of length) = 1 nautical mile.
* Knot (velocity) = 1 nautical mile per hour, 1.1516 miles per hour, 1.689 feet per second, 1.853 kilometers per hour, 51.48 centimeters per second., 6080.20 feet per hour.

L

* Large calorie = See kilogram-calorie.
* Last (Br) = 80 bushels (variable), 2.9095 cubic meters.
* League (statute) = 3 statute miles, 4.8280 kilometers.
* League (nautical) = 3 nautical miles, 5.5597 kilometers.
* Light (speed of) = 2.9986×1010 centimeters per second.
* Light Year = 5.9×1012 miles, 9.4637×1012 kilometers.
* Ligne (Paris line) = 1/12 pouce or Paris inches, 0.22583 centimeter.
* Line (Br) = 1/12 inches, 0.21167 centimeters.
* Link (Engineer's or Ramden's) = 0.01 Engineer's chain, 1 foot, 12 inches, 30.480 centimeters.
* Link (Surveyor's or Gunter's) = 1.25×10-4 miles, 0.01 Gunter's chain, 0.04 rod, 0.22 yards, 0.66 foot, 7.92 inches, 0.2011684 meter, 20.11684 centimeter.
* Liter = 0.0013080 cubic yard, 0.028378 bushel, 0.027497 Br bushel, 0.26417762 gallon, 0.21998 Br gallon, 0.035316 cubic feet, 0.11351 peck, 0.10999 Br peck, 0.908102 dry quart, 1.056710 liquid quarts, 0.87990 Br quart, 1.8162 dry pints, 2.1134 liquid pints, 1.7598 Br pints, 8.4538 gills, 7.0392 Br gills, 33.8147 fluid ounces, 35.196 Br fluid ounces, 61.025 cubic inches, 270.5179 fluid drams, 0.001000 cubic meter, 1.000 cubic decimeter, 1000.000 cubic centimeter.
* Liter-atmosphere (normal) = 3.7745×10-6 horse power-hour, 0.035319 cubic foot-atmosphere, 0.09607 BTU (mean), 10.333 kilogram-meters, 24.206 gram-calories (mean), 74.735 foot-pounds, 101.328 joules (absolute), 2404.5 foot-poundals.
* Liter-atmosphere (lat. 45°, g = 980.616) = 101.323 joules (absolute).
* La livre (French Pound) = 0.5 kg.
* Lumen = 0.001496 watt.

M

* Mean Solar Day = 1440 minutes, 86,400 seconds.
* Megaerg = 1×106 ergs.
* Megameter = 1×106 meter.
* Meter = 5.3961×10-4 nautical mile, 6.2137×10-4 statute mile, 0.00497096 furlong, 0.0497096 Gunter's chain, 0.198838 rod, 0.54681 fathom, 1.093611 yard, 1.093614 Br yard, 3.280833 feet, 3.280843 Br feet, 3.0784 Fr pied, 4.970960 Gunter's links, 39.3700 inches, 39.3701 Br inches, 1×106 megameter, 0.001 kilometer, 100 centimeters, 1×109 millimicrons (micromillimeter), 1×1010 angstrom units, 1×1012 millionth microns, 1.55316413×106 wavelength of red line of cadmium.
* Metric Ton = 1 tonne, 1 millier.
* Microgram = 1×10-6 gram, 0.001 milligram.
* Microliter = 1×10-6 liter.
* Micromicron = 1×10-12 meter.
* Microradian = 0.206265 seconds.
* Micron = 3.937×10-6 inches, 0.039370 mil, 39.37 millionths of an inches, 1×10-6 meter, 1×10-4 centimeter, 0.001 millimeter, 1000 milli-microns (micro-millimeters), 1×104 Angstrom units.
* Mil = 0.001 inches, 0.00254 centimeter, 0.0254 millimeter, 25.4 microns.
* Mil (Angular) = 1×10-3 radians.
* Mil (Military) = 360/6400 degrees.
* Mile (statute) = 1.69×10-13 light year, 0.86836 nautical mile, 8 furlongs, 80 Gunter's chains, 320 rods, 1760 yards, 5280 feet, 8000 Gunter's links, 6.3360×104 inches, 0.160935 myriameters, 1.60935 kilometers, 1609.35 meters.
* Mile (nautical) = The length of 1 minute of arc on the earth's surface at the equator, 1/3 league, 1.1516 statute miles, 2026.8 yards, 6080.2 feet, 1.85325 kilometers.
* Mile (British) = 1.60934 kilometers.
* Millier = 1 tonne, 1 metric ton.
* Milligram = 2.2046×10-6 avoirdupois pound, 2.67923×10-6 apothecary or troy pound, 3.52739×10-6 avoirdupois ounce, 3.215074×10-6 apothecary or troy ounce, 5.64383×10-4 avoirdupois dram, 2.57206×10-4 apothecary or troy dram, 6.43015×10-4 pennyweight, 7.71618×10-4 scruple, 0.01543236 grains, 1×10-6 kilogram, 0.001 gram, 0.005 metric carat.
* Milliliter = 0.0084538 gill, 0.0338147 fluid ounce, 0.035196 fluid Br ounce, 0.061025 cubic inches, 0.2705179 fluid dram, 16.2311 minims, 0.001 liter, 1.000027 cubic centimeter.
* Millimeter = 0.0393700 inches, 0.0393700 Br inches, 39.37 mils, 0.001 meter, 0.1 centimeter, 1000 microns.
* Milli-micron = 1 micro-millimeter, 1×10-9 meter, 1×10-7 centimeter, 0.001 micron, 10 Angstrom units.
* Millionth Micron = 1 micromicron, 1×10-12 meter, 1×10-10 centimeter, 0.01 Angstrom units.
* Miner's inches = 1.5 cubic feet per minute or 11.25 GPM (in AZ CA MT NV OR), 1.2 cubic feet per minute or 9.0 GPM =9.0 Gallons Per Minute (in ID KS NE NM ND SD UT).
* Minim (fluid US) = 1/61440 gallon, 1.3021×10-4 liquid pint, 5.2083×10-4 gill, 1/480 fluid ounce, 1/60 fluid dram, 0.061610 milliliter, 0.061612 cubic centimeter, 61.612 cubic millimeter.
* Minim (Br) = 0.059194 cubic centimeter.
* Minute (angle) = 1.8519×10-4 quadrant, 2.90888×10-4 radian, 1/60 degree, 60 seconds.
* Minute (time) = 9.9206×10-6 week, 6.94446×10-4 days, 0.016667 hour, 60 seconds.
* Month (mean calendar) = 30.42 days, 730 hours, 4.38×104 minutes, 2.628×106 seconds.
* Month (lunar) = 29 days 12 hours 44 minutes.
* Myriagram = 22.04622 avoirdupois pounds, 10 kilograms, 1×104 grams.

N

* Nail (Br) = 2.25 inches, 5.715 centimeters.
* Newton (force) = 1×105 Dyne, 0.22481 pounds weight. (Assumes g = 980.665 cm / second squared.)
* Noggin (Br) = 1/32 liquid gallon, 142.06 cubic centimeters.

O

* Ounce (fluid US) = 1/128 gallon, 0.3125 liquid quart, 1/16 liquid pint, gill, 1.80469 cubic inches, 8 fluid drams, 480 minims, 0.0295729 liter, 0.295729 decaliter, 29.5729 milliliters, 29.5737 cubic centimeters.
* Ounce (fluid Br) = 0.006250 Br gallon, 8 fluid Br drachms, 480 minims, 28.4130 cubic centimeters.
* Ounce (avoirdupois) = 2.790179×10-6 long ton, 3.125×10-6 short ton, 6.25×10-4 short hundredweight, 0.075954861 apothecary or troy pound, 1/16 avoirdupois pound, 0.9114583 apothecary or troy ounce, 7.29166 apothecary or troy drams, 16 avoirdupois drams, 18.22917 pennyweights, 21.875 apothecary scruples, 437.5 grains, 2.83495×10-6 metric ton, 28.349527 grams.
* Ounce (apothecary or troy) = 3.4285×10-6 short ton, 0.06857143 avoirdupois pound, 0.08333 apothecary or troy pound, 1.09714 avoirdupois ounces, 17.55428 avoirdupois drams, 8 apothecary or troy drams, 20 troy pennyweights, 24 scruples, 480 grains, 31.103481 grams, 3.1103481×104 milligrams.

P

* Pace = 2.5 feet, 30 Br inches, 76.2 centimeters.
* Palm (Br) = 3 inches, 7.62 centimeters.
* Parsec = 1.92×1013 miles, 3.26 light years, 3.084×1013 kilometers.
* Parts Per Million (PPM) = 0.0584 grains per gallon, 0.07016 grains per Br gallon, 8.345 pounds per million gallons.
* Pascal = 9.869×10-6 Standard Atmospheres, 145.15×10-4 psi, 0.0102 cm water.
* Peck = 0.25 bushel, 8 quarts, 16 pints, 537.605 cubic inches, 0.880958 dekaliter, 8.80958 liters.
* Peck (Br) = 2 Br gallons, 554.6 cubic inches, 9.90919 liters.
* Pennyweight (troy) = 0.003428571 avoirdupois pounds, 0.0041667 apothecary or troy pound, 1/20 apothecary or troy ounce, 0.0548571 avoirdupois ounce, 0.8777143 avoirdupois dram, 24 grains, 1.55517 grams, 1555.17 milligrams.
* Perch (US & Br) = 1 rod, 16.5 feet, 5.0292 meters.
* Perch (masonry) = 24.75 cubic feet.
* Pied (Fr) = 1/6 Fr toise, 12 Paris inches, 0.3248 meter.
* Pint (dry) = 1/64 bushel, 0.0625 peck, 0.5 quart, 33.600 cubic inches, 0.550599 liter, 550.61 cubic centimeters.
* Pint (liquid) = 6.1881×10-4 cubic yard, 0.016711 cubic foot, 0.125 gallon, 0.5 quart, 0.83268 Br pint, 4 gills, 16 fluid ounces, 28.875 cubic inches, 128 fluid drams, 7680 minims, 0.473167 liter, 473.167 milliliters, 473.179 cubic centimeters.
* Pint (Br liquid) = 0.125 Br gallon, 0.5 Br quart, 1.20094 US pint, 4 Br gills, 20 Br fluid ounces, 0.56825 liter, 568.25 milliliters, 568.26 cubic centimeters.
* Point (printer's type) = 1/72 inches, 0.35278 centimeters.
* Poise (viscosity) = 1 gram per centimeter per second, 0.0010197 gram weight second per square centimeter, 0.002092 pound weight second per square foot, 1.45032×10-6 reyn, 100 centipoises.
* Pole (Br) = 1 rod, 5.5 yards, 16.5 feet, 5.0292 meters.
* Pottle (Br) = 0.5 liquid gallon, 2.273 cubic decimeters.
* Pouce (Paris inches) = 1/12 pied, 12 lignes (Paris lines), 2.70700 centimeters.
* Pound (avoirdupois) = The mass of 27.692 cubic inches of water weighed in air at 4 degrees C and 760 mm pressure, 4.464286×10-4 long ton, 5.0×10-4 short ton, 0.0089286 long hundredweight, 0.01 short hundredweight, 1.2152778 apothecary or troy pounds, 16 avoirdupois ounces, 14.5833 apothecary or troy ounces, 256 avoirdupois drams, 116.6667 apothecary or troy drams, 291 6667 pennyweights, 350.01 scruples, 7000 grains, 4.5359243×10-4 metric ton, 0.4535924 kilogram, 453.5924 grams.
* Pound (apothecary or troy) = 3.6735×10-4 long ton, 4.1143×10-4 short ton, 0.822857 avoirdupois pound, 12 apothecary or troy ounces, 13.165714 avoirdupois ounces, 96 apothecary or troy drams, 210.6514 avoirdupois drams, 240 pennyweights, 288 scruples, 5760 grains, 3.7324×10-4 metric ton, 0.3732418 kilogram, 373.2418 grams.
* Poundal (force) = 0.031081 pound weight, 14.098 grams weight, 1.3825×104 dynes. (Assumes G=980.665 cm / second squared).
* Puncheon (Br) = 70 Br gallons, 84 wine gallons, 0.31823 cubic meter.

Q

* Quadrant = 1.57080 radians, 90 degrees, 5400 minutes.
* Quart (dry) = 1/32 bushel, 0.038889 cubic foot, 0.125 peck, 2 dry pints, 67.2006 cubic inches, 1.10120 liters, 1101.23 cubic centimeters.
* Quart (liquid) = 0.033421 cubic foot, 0.25 gallon, 2 liquid pints, 8 gills, 32 fluid ounces, 57.749 cubic inches, 256 fluid drams, 0.946333 liters, 946.358 cubic centimeters.
* Quart (Br liquid) = 0.25 Br gallon, 2 Br liquid pints, 1.13650 liters, 1136.52 cubic centimeters.
* Quarter (US mass) = 0.25 short ton, 500 pounds, 226.795 kilograms.
* Quarter (US mass) = 0.25 long ton, 560 pounds, 254.01 kilograms.
* Quarter (Br capacity) = 8 bushels, 2.909 hectoliters.
* Quarter (Br linear) = 1 span, 0.25 yard, 9 inches, 22.86 centimeters.
* Quarter (Br mass) = 0.25 short hundredweight, 25 pounds, 11.340 kilograms.
* Quarter (Br mass) = 0.25 long hundredweight, 28 pounds, 12.70 kilograms.
* Quartern (Br dry) = 0.5 gallon, 2273.1 cubic centimeters.
* Quartern (Br liquid) = 1/32 gallon, 142.07 cubic centimeters.
* Quintal (metric) = 1.96841 long hundredweights, 220.46 pounds, 100 kilograms, 1×105 grams.
* Quintal (US or Br) = 100 or 112 pounds (variable).
* Quintal (Argentine) = 101.28 pounds.
* Quintal (Brazil) = 129.54 pounds.
* Quintal (Chile) = 101.41 pounds.
* Quintal (Mexico) = 101.47 pounds.
* Quint. (Castile, Peru) = 101.43 pounds.
* Quire = 25 sheets.

R

Radian = 0.5 Pi (π), 0.159155 circumference or revolution, 0.637 quadrant, 57.29578 degrees, 57 degrees - 17 minutes - 44.8 seconds, 3437.75 minutes, 2.06265×105 seconds, 1×103 angular mils.

* Ream = 500 sheets.
* Register Ton (Br) = 100 cubic feet, 2.8317 cubic meters.
* Revolution = 4 quadrants, 2 Pi radians, 6.2832 radians, 360 degrees.
* Reyn (viscosity) = Pounds force seconds per square inches, 6.895×104 poise.
* Rod (Surveyors measure) = 0.003125 mile, 0.025 furlong, 0.25 Gunter's chain, 1 perch, 5.5 yards, 16.5 feet, 25 links, 198 inches, 5.029210 meters.
* Rod (Br volume) = 1000 cubic feet, 28.317 cubic meters.
* Rood (Br) = 0.25 acre, 40 square perches, 1210 square yards, 10.117 ares or square dekameters.
* Rope (Br) = 20 feet, 6.0960 meters.

S

* Sack = 3 bushels, 0.10911 cubic meter.
* Scruple (apothecary) = 0.002857143 avoirdupois pound, 0.003472222 apothecary or troy pound, 0.0457143 avoirdupois ounce, 0.041667 apothecary or troy ounce, 0.7314286 avoirdupois dram, 1/3 apothecary or troy dram, 0.833333 pennyweight, 20 grains, 1.2959784 grams, 1295.9784 milligrams.
* Seam (Br) = 8 bushels, 0.29095 cubic meter.
* Second (angle) = 4.84814×10-6 radian, 4.84814 microradians, 2.7778×10-4 degree, 0.016667 minute.
* Second (time, mean solar) = 1.1574×10-6 mean solar day, 1.1606×10-6 sidereal day, 2.7778×10-4 mean solar hour, 0.016667 mean solar minute, 1.00273791 sidereal seconds.
* Second (time, sidereal) = 0.997270 mean solar second.
* Sign = 30 degrees.
* Skein = 360 feet, 120 yards, 109.73 meters.
* Slug = 1 geepound, 32.174 pounds, 14.594 kilograms.
* Space, Entire (solid angle) = 4 Pi, 12.5664 steradians.
* Spherical Right Angle = 0.125 sphere, 0.25 hemisphere, Pi/2 steradians.
* Square Centimeter = 1×102 barns, 2.47104×10-7 square chain, 3.95367×10-6 square rod, 1.1960×10-4 square yard, 0.0010764 square foot, 0.00247104 square link, 0.15500 square inches, 1.5500×105 square mils, 1.9735×105 circular mils, 127.32 circular millimeters, 1×10-4 square meter, 0.01 square decimeter, 100 square millimeters.
* Square Chain (Gunter's) = 1.5625x10-4 square mile, 16 square rods, 484 square yards, 4356 square feet, 1×104 square links, 6.27264×105 square inches, 404.6873 square meters.
* Square Decimeter = 15500 square inches, 0.01 square meter, 100 square centimeters.
* Square Degree = 3.0462×10-4 steradian.
* Square Dekameter = 0.02471044 acre, 119.60 square yards, 1 are, 100 square meters.
* Square Foot = 3.58701 10-8 square mile, 2.29568×10-6 acre, 2.29568×10-4 square chain, 0.00367309 square rod, 1/9 square yard, 2.29568 square links, 144 square inches, 9.290341×10-4 are, 0.0929034 square meter, 929.034 square centimeters.
* Square Foot (Br) = 0.090290304 square meter.
* Square Hectometer = 2.471044 acres, 2.471058 acres (Br), 1×104 square meters.
* Square inch = 1.59423×10-6 square chain, 1/144 square foot, 1/1296 square yard, 0.0159423 square link, 1×106 square mils, 1.27324×106 circular mils, 6.4516· 10-4 square meter, 6.4516 square centimeters, 645.16 square millimeters.
* Square Kilometer = 0.3861006 square mile, 247.1044 acres, 247.1058 Br acres, 1.1960×106 square yards, 1.0764×107 square feet, 1×106 square meters.
* Square Link (Gunter's) = 1×10-6 acre, 1×10-4 square chain, 0.0016 square rod, 0.0484 square yard, 0.4356 square foot, 62.7264 square inches, 0.040469 square meter, 404.69 square centimeters.
* Square Meter = 3.8610×10-7 square mile, 2.471044×10-4 acre, 2.471058×10-4 Br acre, 0.00247104 square Gunter's chain, 0.039537 square rod, 1.195985 square yards, 1.195992 square Br yards, 10.76387 square feet, 10.76390 square Br feet, 24.7104 square Gunter's links, 1550.0 square inches, 1×10-6 square kilometer, 1×10-4 hectare, 0.01 are, 1 centare, 1×104 square centimeters, 1×106 square millimeters.
* Square Mil = 1×10-6 square inches, 1.2732 circular mils, 6.4516×10-6 square centimeter, 6.4516×10-4 square millimeter.
* Square Mile = 640 acres, 6400 square chains, 1.02400×105 square rods, 3.0976×106 square yards, 2.78784×107 square feet, 2.589998 square kilometers, 258.9998 hectares, 2.589998×106 square meters.
* Square Millimeter = 0.0015500 square inches, 1550.0 square mils, 1973.5 circular mils, 1×10-6 square meter, 0.01 square centimeter, 1.2732 circular millimeters.
* Square Perch = 1/160 acre, 30.25 square yards, 25.293 square meters.
* Square Pole (Br) = 30.25 square yards.
* Square Rod = 9.765625×10-6 square mile, 0.00625 acre, 0.0625 square Gunter's chain, 30.25 square yards, 272.25 square feet, 625 square Gunter's links, 3.9204×104 square inches, 0.0025293 hectare, 25.293 square meters.
* Square Yard = 3.22831×10-7 square mile, 2.06612×10-4 acre, 0.00206612 square chain, 0.0330579 square rod, 9 square feet, 20.6612 square link, 1296 square inches, 8.3612736×10-6 hectare, 0.0083612736 square dekameter, 0.83612736 square meter, 8361.2736 square centimeters.
* Square Yard (Br) = 2.0661×10-4 Br acre, 8.2645×10-4 rood, 0.83612736 square meter.
* Steradian = 0.25 of the solid angle around a point, 0.07958 sphere, 0.15916 hemisphere, 0.6366 spherical right angle, 3282.8 square degrees.
* Stere = 0.1 dekastere, 1 cubic meter, 10 decisteres, 999.973 liters.
* Stoke (viscosity) = 1 gram per centimeter per second per density (at a given temperature, 100 centistokes.
* Stone (Br) = 14 avoirdupois pounds, 6.35 kilograms.
* Strike (Br) = 2 dry bushels, 0.072738 cubic meter.

T

* Toise (Fr) = 6 Paris feet, 1.9490365 meters (legal), 1.949090 meters (measured).
* Ton (long) = 1.12 short tons, 22.4 short hundredweights, 2240 avoirdupois pounds, 2722.22 apothecary or troy pounds, 3.5840×104 avoirdupois ounces, 1.0160470 metric tons, 1016.0470 kilograms.
* Ton (short) = 0.89286 long ton, 20 short hundredweights, 2000 avoirdupois pounds, 2430.56 apothecary or troy pounds, 3.2000×104 avoirdupois ounces, 2.91666×104 apothecary or troy ounces, 0.907185 metric ton, 907.185 kilograms.
* Tonne = 1 metric ton, 0.984206 long ton, 1.10231 short tons, 22.046223 short hundredweights, 2204.62 avoirdupois pounds, 2679.23 apothecary or troy pounds, 3.527396×104 avoirdupois ounces, 1000 kilograms, 1×103 grams.
* Township = 36 square miles, 2.3040×104 square yards, 93.240 square kilometers.
* Tun = 252 gallons.

W

* Watt = 0.001 kilowatt, 0.0013410 horse power, 0.0013596 horse power (metric) or cheval vapeur, 0.01433 kilogram-calorie (mean) per minute, 0.056896 BTU (mean) per minute, 0.73756 foot-pound per second, 1 joul per second, 44.254 foot-pounds per minute, 1×107 ergs per second.
* Watt (International) = 1.00032 watt (absolute).
* Watt of maximum visibility radiation = 668 lumens.
* Watt-hour = 0.001 kilowatt-hour, 0.0013410 horse power-hour, 0.86001 kilogram-calorie (mean), 3.4130 BTU (mean), 367.10 kilogram-meters, 860.01 gram-calories (mean), 2655.3 foot-pounds, 3600 joules.
* Week = 168 hours, 1.0080×104 minutes, 6.04800×105 seconds.
* Wey (Br, capacity) = 40 bushels (variable).
* Wey (Br, mass) = 252 pounds (variable).

Y

* Yard = 5.68182×10-4 mile, 0.00454545 furlong, 0.0454545 Gunter's chain, 0.181818 rod, 3 feet, 4.54545 Gunter's links, 36 inches, 3600/3937 meter, 91.44 centimeters.
* Yard (Br) = 0.18182 Br pole, 4 Br linear quarters, 0.9144 meter, 91.44 centimeters, 1.420212×106 wavelengths of red line of cadmium.
* Year (leap) = 366 days, 8784 hours.
* Year (tropical, mean solar) = 365.2422 mean solar days, 8765.8128 mean solar hours, 3.15569×107 mean solar seconds.
* Year (sidereal) = 365.256 mean solar days, 8766.144 mean solar hours.
 
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