Longueur
Length

inch (in) = 2,54 cm
foot(ft) = 30,48 cm
yard (yd) = 0,91 m
1 yard = 3 feet = 36 inches
mile (m) = 1609 m
nautical mile (nm) = 1852 m

Capacité
Capacity

pint (pt) = 0,56 L
quart (qt) = 1,13
US gallon (US gal) =3,78 L
British gallon (Brit.gal) = 4,54 L

Poids
Weight

ounce (oz) = 28 g
pound (lb) = 0,455 kg
stone (st) = 6,37 kg
1 st = 14 lbs = 224 oz

Vitesse
Speed

knot (kn) = 1 nautical mile per hour

Superficie
Area

hectare (ha) = 100X100 m²
acre (a) = 0,40 ha

Température
Temperature

Farhrenheit : °F = 9/5x°C+32