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Conversions of length (distance) units
Length conversion
This program converts English and American measures to metric units

 millimeters (mm): centimeters (cm): meters (m): kilometers (km):
 inches (in): feet (ft): yards (yd): miles:
 fathom (fa): rod (rd): chain (ch): furlong (fur):

Feet may be shown as ft. or ' and inches as in. or ''.

Personal Body Length - USA Size Measurements of Human Height

Length and distance units conversion chart

Sorted in alphabetical order

 Name of length Symbol Definition Relation to SI unit length (m) angstrom Å - ≡ 1.000×10−10 m = 0.1 nm astronomical unit AU - = 149 597 870.691 ±0.030 km atomic unit of length au ≡ a0 ≈ 5.291 772 083×10−11 ±19×10−20 m barley corn - ≡ 1/3 in ≈ 8.466 667 mm Bohr radius a0; b ≡ α/(4πR∞) ≈ 5.291 772 083×10−11 ±19×10−20 m cable length (Imperial) - ≡ 608 ft = 185.3184 m cable length (International) - ≡ 1/10 NM = 185.2 m cable length (U.S.) - ≡ 720 ft = 219.456 m calibre cal ≡ 1 in = 25.4 mm chain (Gunter's Surveyor's) ch ≡ 66 ft = 20.1168 m chain;  (Ramsden's; Engineer's) ch ≡ 100 ft = 30.48 m cubit - ≡ 18 in = 0.4572 m ell ell ≡ 45 in = 1.143 m fathom fm ≡ 6 ft = 1.8288 m ≈ 1/1000 NM = 1.852 m fermi fm ≡ 1.000×10−15 m = 1.000×10−15 m finger - ≡ 7/8 in = 22.225 mm finger (cloth) - ≡4 ½ in = 0.1143 m foot (Benoît) ft (Ben) - ≈ 0.304 799 735 m foot (Clarke's; Cape) ft (Cla) - ≈ 0.304 797 265 4 m foot (Indian) ft Ind - ≈ 0.304 799 514 m foot (International) ft ≡ 1/3 yard = 12 in = 0.3048 m ! foot (Sear's) ft (Sear) - ≈ 0.304 799 47 m foot (U.S. Survey) ft (US) ≡ 1200/3937 m ≈ 0.304 800 610 m furlong fur ≡ 660 ft = 201.168 m geographical mile mi ≡ 6082 ft = 1853.7936 m hand - ≡ 4 in = 0.1016 m inch in ≡ 1/36 yd = 1/12 ft = 25.4 mm ! league lea ≡ 3 mi = 4828.032 m light-day - ≡ 24 light-hours = 2.590 206 837 12×1013 m light-hour - ≡ 60 light-minutes = 1.079 252 848 8×1012 m light-minute - ≡ 60 light-seconds = 1.798 754 748×1010 m light-second - - ≡ 2.997 924 58×108 m light-year l.y. ≡ c0 × 86 400 × 365.25 = 9.460 730 472 580 8×1015 m line ln ≡ 1/12 in (Klein 1988, 63) ≈ 2.116 667 mm link (Gunter's; Surveyor's) lnk ≡ 1/100 ch = 0.201 168 m link (Ramsden's; Engineer's) lnk ≡ 1 ft = 0.3048 m metre (SI base unit) m ≡ 1 m = 1 m mickey - ≡ 1/200 in = 1.27×10−4 m micron µ - ≡ 1.000×10−6 m mil; thou mil ≡ 1.000×10−3 in = 2.54×10−5 m mile mi ≡ 1760 yd = 5280 ft = 1609.344 m mile (U.S. Survey) mi ≡ 5280 ft (US) = 5280 × 1200/3937 m ≈ 1609.347 219 m nail (cloth) - ≡ 2 ¼ in = 57.15 mm nautical league NL; nl ≡ 3 NM = 5556 m nautical mile NM; nm ≡ 1852 m nautical mile (Admiralty) NM (Adm); nm (Adm) ≡ 6080 ft = 1853.184 m pace - ≡ 2.5 ft = 0.762 m palm - ≡ 3 in = 76.2 mm parsec pc ≈180 × 60 × 60/π AU ≈ 206 264.806 25 AU = 3.261 563 776 9 ±6 ×10−10 light-years = 3.085 677 581 3×1016 ±6×106 m point (ATA) pt ≡ 0.013837 in = 0.351 459 8 mm point (Didot; European) pt - ≡ 0.376 065 mm point (metric) pt ≡ 3/8 mm = 0.375 mm point (PostScript) pt ≡ 1/72 in ≈ 0.352 778 mm quarter - ≡ ¼ yd = 0.2286 m rod; pole; perch rd ≡ 16 ½ ft = 5.0292 m rope rope ≡ 20 ft = 6.096 m span - ≡ 6 in = 0.1524 m span (cloth) - ≡ 9 in = 0.2286 m spat S ≡ 1012 m = 1 Tm stick - ≡ 2 in = 50.8 mm stigma; pm - ≡ 1.000×10−12 m ≡ 1.000×10−12 m telegraph mile mi ≡ 6087 ft = 1855.3176 m twip twp ≡ 1/1440 in ≈ 1.763 889×10−5 m x unit; siegbahn xu - ≈ 1.0021×10−13 m yard (International) yd ≡ 3 ft = 0.9144 m = 0.9144 m

1 km = 1×103 m = 1×106 mm = 1×109 µm = 1×1012 nm = 1×1015 pm
1 m = 1×103 mm = 1×106 µm = 1×109 nm = 1×1012 pm
1 mm = 1×103 µm = 1×106 nm = 1×109 pm
1 µm = 1×103 nm = 1×106 pm
1 nm = 1×103 pm

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