LONGUEURS

1 pouce = 1 inch (in) = 2,54 cm
1 pied = 1 foot (ft) = 30,48 cm
1 verge = 1 yard (yd) = 0,9144 mètre
1 mille = 1 mile (mi) = 1,6093 kilomètre
1 kilomètre = 0,6214 mile
1 mille marin = 1 nauticalmile(in) = 1,852 kilomètre

SURFACES

1 pouce carré = 1 square inch (sq.in) = 6,4516 cm²
1 pied carré = 1square foot (sq.ft) = 9,2903 dm²
1 verge carrée = 1 square yard (sq.yd) = 0,8361 m²
1 acre = 4840 verges carrées = 0,4047 hectare
1 mille caré = 1 square mile (sq.ml) = 2,590 km²

VOLUMES  

1 pouce cube = 1 cubic inch (cu.in) = 16,3872 cm3
1 pied cube = 1 cubic foot (cu.ft) = 28317 cm3
1 verge cube = 1 cubic yard (cu.yd) = 0,7646 m3
1 once (US) (fl oz) = 0,0296 litre
1 once (UK) (fl.oz) = 0,0284 litre
1 quart (US) (qt) = 0,9463 litre
1 quart (UK) (qt) = 1,1365 litre
1 gallon (US) (gal)) = 3,7853 litres
1 galon (UK) (gal) = 4,5460 litres
1 baril de pétrole = 0,1590 m3

POIDS

1 once = 1 ounce (oz) = 28,3495 grammes
1 livre (UK) = 1 pound (lb) = 0,4536 kilogramme
1 tonne courte (US) = 1 short ton(tn) = 0,9072 tonne
1 tonne forte (UK) = 1 long ton (tn) = 1,0160 tonne
1 hundredweight (US) (cwt) = 0,4536 quintal
1hundredweight (UK) (cwt) = 0,5080 quintal