| Grandeur | Unité utilisée | Symbole | Correspondance S.I. |
| Longueur | Angström | o A |
o 1A = 10-10m |
| Surface | are | a | 1a = 100m2 |
| hectare | ha | 1ha = 10 000m2 | |
| Volume | litre | l | 1l = 10-3m3 |
| Angle plan | degré | ° | 1° = (p/180)rd |
| minute | ' | 1' = (p/(180*60))rd | |
| seconde | " | 1" = (p/(180*3600)rd | |
| tour | tr | 1tr = 2prd | |
| Durée | minute | min | 1min = 60s |
| heure | h | 1h = 3 600s | |
| jour | d (ou j) | 1d = 86 400s | |
| Vitesse | "kilomètre à l'heure" | km/h | 1km/h = 3,6m.s-1 |
| Energie | calorie | cal | 1cal = 4,18J |
| électron-volt | eV | 1eV = 1,6.10-19J | |
| kilowattheure | kWh | 1kWh = 3,6.106J | |
| Pression | atmosphère | atm | 1atm = 1,013.105Pa |
| bar | bar | 1bar = 105Pa | |
| Température | degré Celsius | °C | °C = K - 273,15 |