| LONGUEUR: | 1 μm (micron)= 0.001mm | |
| 1 mm = 0.001 m | ||
| 1 cm = 10mm = 0.01 m | ||
| POIDS: | 1 g = 1000 mg | |
| 1 kg = 1000 g | ||
| 1000 kg = 1 t | ||
| VOLUME: | 1 l = 1000 ml | 1 dm3 = 1 l |
| 1 m3 = 1000 l | 1 cm3 = 1 ml | |
| SUPERFICIE: | 1 are = 100 m2 | |
| 1 ha = 100 are = 10 000 m2 | ||
| 1 km2 = 100 ha | ||
| DEBIT: | 1 1/sec = 60 l/min = 1.44 m3/h = 34.56 m3/ jour | |
| 1 l/min = 0.576 m3/jour | ||
| PRESSION: | 1 atmosphere = 760 mmHg = 1.013 bar | |
