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Unit Conversions

PRESSURE

inH2O mH2O psi inHg mmHg mbar Pa
inH2O 1 0.025375 0.0361 0.07348 1.866 2.488 248.84
mH2O 39.409 1 1.42233 2.8959 73.55592 98.0665 9806.65
psi 27.708 0.70307 1 2.03602 51.71493 68.9476 6894.757
inHg 13.609 0.34532 0.49115 1 25.4 33.8639 3386.388
mmHg 0.536 0.01359 0.01934 0.03937 1 1.3332 133.322
mbar 0.402 0.01019 0.0145 0.02953 0.75006 1 100
Pa 0.004019 0.000102 0.00015 0.000295 0.0075 0.01 1

VELOCITY

cm/s ft/s m/s km/hr knots mph
cm/s 1 30.48 100 27.78 51.48 44.7
ft/s 0.03281 1 3.281 0.9113 1.689 1.467
m/s 0.01 0.3048 1 0.2778 0.5148 0.477
km/hr 0.036 1.097 3.6 1 1.853 1.609
knots 0.01943 0.5921 1.943 0.5396 1 0.8684
mph 0.02237 0.6818 2.237 0.6214 1.152 1

TEMPERATURE

CONVERT FROM CONVERT TO FORMULA
Fahrenheit Celsius (F - 32) / 1.8
Fahrenheit Kelvin (F + 459.67) / 1.8
Fahrenheit Rankine F + 459.67
Rankine Kelvin R / 1.8
Rankine Celsius (R - 491.67) / 1.8
Rankine Fahrenheit R - 459.67
Celsius Fahrenheit (1.8 × C) + 32
Celsius Rankine (1.8 × C) + 491.67
Celsius Kelvin C + 273.15
Kelvin Rankine 1.8 × K
Kelvin Fahrenheit (1.8 × K) - 459.67
Kelvin Celsius K - 273.15

DENSITY

kg/m3 slugs/ft3 lbm/ft3
kg/m3 1 0.00194 0.0624
slugs/ft3 515.3788 1 32.17096
lbm/ft3 16.02 0.03108 1

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