Conversion of pressure units - sengpielaudio
 
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● Conversion of pressure or stress  units ●
 
Definition: pressure = force per area; p = F / A; F = force, A = area, p = pressure
 
The SI unit of the pressure is the pascal with the formula sign Pa.
1 Pascal is equal to the pressure of 1 newton per square meter. 1 Pa = 1 N / m2 ≡ 1 kg / m · s2.
The standard atmospheric pressure is 101,325 pascals = 1,013.25 hPa = 101.325 kPa
Good to know: 1 Pa = 1 N/m2 ≡ 94 dBSPL and 1 bar = 105 Pa
FAQ: 1 megapascal = 1,000,000 pascals - Fill in the appropriate line the known pressure value
 
Attention: Do not re-enter the exact number of an answer.
atmosphere (at) techn.
atmosphere (atm) phys.
bar
barad
barye
cm of mercury Hg (0 °C)
cm of water H2O (4 °C)
dyne / cm2
foot of water H2O (39°F)
gigapascal
hectopascal
Inch of mercury Hg (32 °F)
Inch of mercury Hg (60 °F)
Inch of water H2O (60 °F)
Inch of water H2O (39 °F)
kg force / cm2
kg force / dm2
kg force / m2
kg force / mm2
kilopascal
kilopounds per square inch
megapascal
meter of water H2O (16 °C)
meter of water H2O (4 °C)
microbar (µbar)
micron of mercury Hg (Millitorr)
millibar
millimeter of mercury Hg (0 °C)
millimeter of water H2O (16 °C)
millimeter of H2O (4 °C)
millitorr
newton / m2 = pascal
ounce (avdp) / square inch
pascal = N / m2
pounds per square foot
psi = pounds per square inch
poundal per square foot
poundal per square inch
standard atmosphere atm
ton (long) per square foot
ton (long) per square inch
tonne (metric) / cm2
ton (short) per square foot
ton (short) per square inch
ton per square inch
torr

Standard atmospheric pressure is 101325 pascals = 1013.25 hPa = 101.325 kPa

Conversions of other pressure units
 
Pressure conversion chart
 
  psi kPa kg/cm2 cm
H2O		 feet
H2O		 inch
Hg		 mm Hg
= torr		 inch
H2O		 ounce per
sq. inch		 Atmospheres bar mbar MPa
psi 1 6.894757 0.070306958 70.306927 2.306723 2.03602 51.71486 27.68068 16 0.068046 0.06894757 68.9476 0.00689
kPa 0.1450377 1 0.01019716 10.19745 .3345618 .2952997 7.50061 4.01472 2.320603 0.009669235 0.01 10 0.001
kg/cm2 14.223343 98.06694 1 1000.026 32.809312 28.95901 735.5588 393.711806 227.57349 0.967841596 0.98066494 1013.25 0.09806
cm of H2O 0.0142229 0.0980634 0.00099997 1 0.032808 0.0289581 .7355372 0.3937 0.227566 0.000967814 0.000980634 0.9806 0.00098
feet of H2O 0.433515 2.968961 0.03047912 30.48 1 0.882646 22.4192 12 6.93624 0.02949896 0.02968961 29.689 0.00298
inches of Hg 0.4911542 3.386389 0.0345316 34.53253 1.132957 1 25.4 13.595484 7.85847 0.0334211 0.03386389 33.8639 0.00386
mm of Hg = torr 0.0193368 0.1333225 0.00135951 1.359554 0.0446046 0.039370079 1 0.535255 0.3093888 0.0013157895 0.001333225 1.33322 0.00013
inches of H2O 0.03612628 0.2490819 0.00254219 2.54 0.08333 0.0735539 1.8682683 1 0.57802 0.00245825 0.002490819 2.49089 0.000249
ounces per square inch 0.0625 0.4309223 0.004394308 4.394308 0.14417 0.12725125 3.23218 1.73004 1 0.004252875 0.004309223 4.309 0.0004309
atmospheres 14.696 101.325 1.033231 1033.2633 33.8995 29.9213 760 406.794 235.136 1 1.01325 1013.25 0.1013
bar 14.5038 100 1.019716 1019.7466 33.4833 29.53 750.0626 401.8596 232.0608 0.986923 1 1000 0.1
mbar 0.0145 0.1 0.001019 1.019 0.003456 0.02953 0.75006 0.40146 .23206 0.00099 0.001 1 0.0001
MPa 145.0377 1000 10.197 10197.45 334.56 295.299 7500.61 4014.74 2320.603 9.669 10 10000 1

Unit Name Symbol SI Equivalent Pascal, Pa ≡ N/m2
Pascal (SI unit) Pa ≡ N/m2 ≡ kg/m·s2; N ≡ Newton  
     
atmosphere (metric) techn. at 9.806650×104 Pa
atmosphere (metric) phys. atm 1.013250×105 Pa
atmosphere (metric) bar 1×105 Pa
barad barad 0.1 Pa
barye   0.1 Pa
centimeter of mercury (0 °C) cm Hg (0 °C) 1333.223684210526 Pa
centimeter of mercury (16 °C) cm Hg (16 °C) 1329.598425 Pa
centimeter of water (4 °C) cm H2O (4 °C) 98.06376018 Pa
centimeter of water (16 °C) cm H2O (16 °C) 97.9706 Pa
dyne per square centimeter dyn/cm2 0.1 Pa
foot of water (4 °C) ft H2O (4 °C) 2988.98 Pa
foot of water (16 °C) ft H2O (16 °C) 2986.08 Pa
gigapascal GPa 1×109 Pa
hectopascal hPa 100 Pa
inch of mercury (0 °C) in Hg (0 °C) 3386.388157894736 Pa
inch of mercury (16 °C) in Hg (16 °C) 3377.18 Pa
inch of water (4 °C) in H2O (4 °C) 249.0819508572 Pa
inch of water (16 °C) in H2O (16 °C) 248.845 Pa
kilogram force per square centimeter kgf/cm2 9.80665×104 Pa
kilogram force per square decimeter kgf/dm2 980.665 Pa
kilogram force per square meter kgf/m2 9.80665 Pa
kilogram force per square millimeter kgf/mm2 9.80665×106 Pa
kilopascal kPa 1000 Pa
kilopound force per square inch kip/in2, ksi, KSI 6.89476×106 Pa
megapascal MPa 1×106 Pa
meter of water (4 °C) mH2O, mCE (4 °C) 9806.38 Pa
meter of water (16 °C) mH2O, mCE (16 °C) 9797.06 Pa
microbar (barye, barrie) µbar 0.1 Pa
micron of mercury (millitorr) µHg (0 °C) 0.133322 Pa
millibar mbar 100 Pa
millimeter of mercury (0 °C) mm Hg, torr, Torr (0 °C) 133.322368 Pa
millimeter of mercury (16°C) mm Hg, torr, Torr (16 °C) Pa
millimeter of water (4 °C) mm H2O, mmCE (4 °C) 9.80638 Pa
millimeter of water (16 °C) mm H2O, mmCE (16 °C) 9.79706 Pa
millitorr mtorr 0.133322 Pa
newton per square meter N/m2 1 Pa
ounce force (av.) per square inch ozf/in2, osi 430.922 Pa
pascal Pa, N/m2 1 Pa
pound force per square foot lbf/ft2 47.8803 Pa
pound force per square inch psi, PSI, lbf/in2 6894.76 Pa
poundal per square foot pdl/ft2 1.48816 Pa
poundal per square inch pdl/in2 214.296 Pa
standard atmosphere atm 1.01325×105 Pa
ton force (long) per square foot tonf/ft2 (UK) 1.07252×105 Pa
ton force (long) per square inch tonf/in2 (UK) 1.54443×107 Pa
ton force (short) per square foot tonf/ft2 (US) 9.57605×104 Pa
ton force (short) per square inch tonf/in2 (US) 1.37895×107Pa
ton force (metric) per square centimeter tonf/cm2 (metric) 9.80665×107Pa
ton force (metric) per square meter tonf/m2 (metric) 9806.65 Pa
torr torr 133.322368 Pa
 
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