| Mass |
Density |
Calorific value |
| 1kg = 35.27 ounce 1 gm-3 |
= 0.448 grains ft-3 |
1 MJ kg-1 = 238.8 kcal kg-1 |
| 1kg = 2.205 lb |
1 kg m-3 = 0.0624lb ft-3 |
1 MJ kg-1 = 430 Btu lb-1 |
| 1 tonne = 2205 lb |
1 kg m-3 = 0.1 lb (Imp gal)-1 |
1 MJ m-3 = 26.84 Btu ft-3 |
| 1 tonne = 0.984 lmp ton |
1 kg m-3 = 0.835lb (US gal)-1 |
1 cal g-1 = 4.187 kJkg-1 |
| 1 tonne = 1.102 US ton |
1 lb ft-3 = 16.02 kg m3 |
1 Btu lb-1 = 2.326 kJ kg-1 |
| |
1 lb(Imp gal)-1 = 99.8 kg m-3 |
1 Btu ft-3 = 37.26 kJm-3 |
| 1 ounce = 28.35 g |
1 lb(US gal) 1 = 119.8 kg m3 |
1 Btu(Imp gal)-1= 232.1 kJm-3 |
| 1 lb = 0.4536 kg |
|
1 Btu(US gal)-1 = 278.7 kJm-3 |
| 1 lmp ton = 1016 kg |
Pressure |
|
| 1 lmp ton = 1.12 US ton |
1 Pa = 1 Nm-2 |
Specific heat capacity |
| 1 US ton = 907 kg |
1 Pa = 0.004 in H2O |
1 kJkg-1oC-1 = 0.239 Btu |
| lb-1oF-1 |
|
|
| |
1 kPa = 0.145 lbfin-2(psi) |
1 kJm-3oC-1 = 0.0149 Btu ft-3oF-1 |
| Length |
1 kPa = 0.295 in Hg |
1 Btu lb-1oF-1 = 4.187 kJkg-1oC-1 |
| 1 cm = 0.394 in |
1 kPa = 7.5 mmHg |
1 Btu ft-3oF-1 = 67.07 kJm-3oC-1 |
| 1 m = 3.281 ft |
1 kgf cm-2 = 14.22 lbfin-2(psi) |
|
| 1 km = 0.621 mile |
1 atm = 760 mmHg |
Heat flux |
| 1 mm = 103 um |
1 atm = 14.696 lbf in-2 |
1 Wm-2 = 0.317 Btu ft-2h-1 |
| |
1 atm = 101.3 kPa |
1 kWm-2 = 860 kcal m-2h-1 |
| |
1 bar = 100kPa |
1 Btu ft-2h-1 = 3.155 Wm-2 |
| |
1 lbf in-2(psi) = 6.895 kPa |
1 kcal m-2h-1 = 1.163 Wm-2 |
| 1 in = 25.4 mm |
1 inH2O = 249 Pa |
|
| 1 ft = 30.48 cm |
1 bar = 14.5 lbf in-2 |
Thermal conductivity |
| 1 yd = 0.9144 m |
1 lbf in-2 = 0.06895 bar |
1 Wm-1oC-1 = 0.578 Btu |
| ft-1h-1oF-1 |
|
|
| 1 mile = 1.609 km |
|
1 Wm-1oC-1 = 6.93 Btu |
| ft-2h-1oF-1 |
|
|
| |
|
1 Btu ft-1h-1oF-1 = 1.73 Wm-1oC-1 |
| Area |
Energy Units |
1 Btuinft-2h-1oF-1= 0.144 Wm-1oC-1 |
| 1 cm2 = 0.155 in2 |
|
|
| 1 m2 = 10.76 ft2 |
Energy |
Heat transfer coefficient |
| 1 km2 = 0.386 mile2 |
1 J = 0.239 cal |
1Wm-2oC-1 = 0.176 Btu |
| ft-2h-1oF-1 |
|
|
| 1 ha = 2.471 acre |
1 J = 0.738 ft lbf |
1Wm-2oC-1 = 0.86 kcal |
| m-2h-1oC-1 |
|
|
| 1 in2 = 6.452 cm2 |
1 J = 107ergs |
1 Btu ft-2oF-1 = 5.678Wm-2oC-1 |
| 1 ft2 = 0.093 m2 |
1 kJ = 0.948 Btu |
1 kcal m-2h-1oC-1 = 1.163 Wm-2oC-1 |
| 1 mile2 = 2.590 km2 |
1 MJ = 0.0095 therm |
|
| 1 acre = 0.405 ha |
1 MJ = 0.3725 hp hour |
Temperature intervals |
| |
1 MJ = 0.278 kWh |
1 deg C = 1.8 deg F = K |
| Volume |
1 kWh = 3.60 MJ |
1 deg F = 0.556 deg C |
| 1m3 = 35.31 ft3 |
1 cal = 4.187 J |
|
| 1m3 = 220 Imp gal |
1 Btu = 1.055 kJ |
|
| 1m3 = 264 US gal |
1 Btu = 0.293 Wh |
|
| 1m3 = 6.29 barrel |
1 therm = 105.5 MJ |
|
| 1 litre = 0.22 Imp gal |
1 therm = 29.31 kWh |
|
| 1 litre = 0.264 US gal |
1 ft lbf = 1.356J |
|
| 1ft3 = 0.0283 m3 |
1 hp hour = 2545 Btu |
|
| 1ft3 = 28.32 litre |
1 hp hour = 2.685 MJ |
|
| 1ft3 = 6.23 Imp gal |
|
|
| 1ft3 = 7.48 US gal |
Power, heat flow rate |
|
| 1 barrel = 42 US gal |
1 W = 0.86 kcal h-1 |
|
| 1 barrel = 159 litre |
1 W = 44.25 ft lbf min-1 |
|
| |
1 kW = 3412 Btu h-1 |
|
| Velocity, flow rate |
1 kW = 1.341 hp |
|
| 1m s-1 = 2.24 mph |
1 kW = 56.87 Btu min-1 |
|
| 1m s-1 = 3.28 fts-1(fps) |
1 Btu-1 = 0.293W |
|
| 1km h-1 = 27.78 cm s-1 |
1 kcal h-1 = 1.163W |
|
| 1km h-1 = 0.911ft s-1(fps) |
1 hp = 0.746 kW |
|
| 1 litre s-1 = 2.119 ft3min-1 |
1 hp = 42.42 Btu min-1 |
|
| 1m3h-1 = 3.67 Imp gal min-1 |
1 hp = 33000 ft lbf min-1 |
|
| 1 ft s-1(fps) = 0.305 m s-1 |
|
|
| 1 mph = 0.447 m s-1 |
|
|
| 1 mph = 1.61 km h-1 |
|
|
| 1 ft3 min-1 = 0.472 litres-1 |
|
|
| 1 Impgal min-1 = 0.273 m3h-1 |
|
|
