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Conversion Charts
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| Conventional unit | -----> multiply by -----> | to get SI unit | | Mass | | lb | 0.45359 | kg | | Length | | micrometer | 0.000001 | m | | mil | 0.00254 | cm | | inch | 0.0254 | m | | foot | 0.3048 | m | | angstrom | 1.0 x 10-10 | m | | Area | | ft2 | 0.0929 | m2 | | in2 | 6.452 | cm2 | | ft2 | 929.03 | cm2 | | Volume | | cm3 | 0.001 | L | | in3 | 0.0164 | L | | gal (US) | 3.7879 | L | | ft3 | 28.3 | L | | L | 1000 | cm3 | | Pressure | | micrometer (Hg) | 0.13332 | Pa | | N/m2 | 1.0 | Pa | | millibar | 100 | Pa | | Torr | 133.32 | Pa | | in (Hg) | 3386.33 | Pa | | lb/in2 | 6895.3 | Pa | | atmosphere | 101,323.2 | Pa | | Conductance or pumping speed | | L/h | 0.000277 | L/s | | L/s | 0.001 | m3/s | | L/min | 0.0166 | L/s | | m3/h | 0.2778 | L/s | | ft3/min | 0.4719 | L/s | | ft3/min | 1.6987 | m3/h | | Gas flow | | micron-L/s | 0.13332 | Pa-L/s | | Pa-L/s | 3.6 | Pa-m3/h | | atm-cc/s | 101.323 | Pa-L/s | | Torr-L/s | 133.32 | Pa-L/s | | Torr-L/s | 0.133 | J/s | | watt | 1000 | Pa-L/s | | kg-mole/s (at 0ºC) | 2.48 x 109 | Pa-L/s | | molecules/s (at 0ºC) | 4 x 10-18 | Pa-L/s | | Outgassing rate | | Pa-L/(m2-s) | 0.001 | W/m2 | | Pa-m3/(m2-s) | 1.0 | W/m2 | | µL/(cm2-s) | 1.33 | W/m2 | | Torr-L/(cm2-s) | 1333.2 | W/m2 | | Dynamic viscosity | | poise | 10 | Pa-s | | Newton-s/m2 | 1 | Pa-s | | Kinematic viscosity | | centistroke | 1 | mm2/s | | Diffusion constant | | cm2/s | 0.0001 | m2/s | | Heat conductivity | | watt/cm-1-K-1 | 100 | J-s-1-m-1-K-1 | | Specific heat | | cal-(g-mole)-1-K-1 | 4184 | J-(kg-mole)-1-K-1 | | J-kg-1-K-1 | M | J-(kg-mole)-1-K-1 | | BTU-lb-1-ºF-1 | 4186M | J-(kg-mole)-1-K-1 | | Heat capacity | | cal-(g-mole)-1 | 4184 | J-(kg-mole)-1 | | J/kg | M | J-(kg-mole)-1 | | BTU/lb | 2325.9M | J-(kg-mole)-1 | | Energy, work or quantity of heat | | kW-h | 3.6 | MJ | | kcal | 4184 | J | | BTU | 1055 | J | | ft-lb | 1.356 | J | | To get conventional unit | <----- divide by <----- | SI unit |
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