| 
| Chaleur |  
| 1 cal | = 4.18 joules = 3.967.10-3 Btu
 |  
|  |  
| 1 Btu | = 1055.06 J = 0.252 kcal
 |  
|  |  
| 1 th | = 1000 kcal |  | 
| Puissance |  
| 1 W | = 1 J/s = 0.860 kcal/h
 |  
|  |  
| 1 CV (cheval vapeur) | = 735 W |  
|  |  
| 1 HP (horse power) | = 745 W |  | 
| 
| Température |  
| Conversion Celsius en Fahrenheit : | °F = 9/5 ´ °C +32 |  
|  |  
| Conversion Fahrenheit en Celsius : | °C = (°F – 32) ´ 5/9 |  
|  |  
| Température en Kelvin : | K = °C + 273 |  | 
| Dimensions |  
| 1 in | = 0.084 ft = 2.54 mm
 |  
|  |  
| 1 ft | = 30.5 cm = 12 in
 = 0.33 yd
 |  
|  |  
| 1 m | = 3.28 ft = 39.37 in
 = 1.0936 yd
 |  
|  |  
| 1 yd | = 0.914 m = 3 ft
 = 36 in
 |  | 
| 
| Surface |  
| 1 cm² | = 0.155 sq.in |  
|  |  
| 1 sq.in (square inch) | = 6.45 cm² |  | 
| Volume |  
| 1 fl.oz (fluide ounce : UK) | = 28.412 cm3 |  
|  |  
| 1 gal (gallon UK) | = 4.545 dm3 (ou litre) |  
|  |  
| 1 gal (gallon USA) | = 3.785 dm3 (ou litre) |  | 
| 
| Pression |  
| 1 atm | = 1.013 bar = 760 mm Hg
 = 1.033 kg/cm²
 = 101325 Pa
 |  | 
| Masse |  
| 1 kg | = 2.204 lb |  
|  |  
| 1 oz (ounce) | = 28.34 g |  
|  |  
| 1 Po (pound) | = 453.5 g = 16 oz
 |  |