# Non-Metric Units

Eenheden
 Niet Metrische Eenheden & Symbolen Naam Eenheid en Veelvouden Symbolen Opmerkingen Lengte inch in ('') 1 in  =  25.4 mm foot ft (') 1 ft  =  0,3048 m yard yd 1 yd  =  0,9144 m mile mile 1 mile  = 1609,344 m mile nautical mile 1 nautical mile  =  1852 m cable cable 1 cable  =  0,1 nautical mile Oppervlakte square inch in2 1 in2 =  6,4516 cm2 square foot ft2 1 ft2 = 0,0929030 m2 square yard yd2 1 yd 2  =  0,836127m2 Volume cubic inch in3 1 in3  =  16,3871 cm3 cubic foot ft3 1 ft3=  28,3168 dm3 cubic yard yd3 1 yd3 =  0,764555 m2 gallon (UK) gal (UK) 1 gal (UK) = 4,54609 dm3 gallon (US) gal (US) 1 gal (US) = 3,78543 dm3 Massa ton ton 1 ton  =  1016,05 kg pound lb 1 lb  =  0,45359237 kg ounce oz 1 oz  =  28,3495 g grain gr 1 gr  =  64,7989 mg Kracht pound-force lbf 1 lbf  =  4,44822 N poundal pdl 1 pdl  =  0,318255 N Moment pound-force inches lbf/in pound-force feet lbf/ft Druk pound-force per square inch lbf/in2 1 lbf/in2 =  6894,76 N/m2 Temperatuur fahrenheit °F 1 =  9/5 t°C + 32 Arbeid foot pound-force ft lbf 1 ft lbf  =  1,35582 J foot poundal ft pdl 1 ft pdl  =  0,0421101 J Warmtehoeveelheid British thermal unit Btu 1 Btu  =  1055,06 J Vermogen foot poundal per second ft pdl/s 1 ft pdl/s  =  0,0421401 W British thermal unit per hour Btu/h 1 Btu/h =  0,293071 W horse power HP 1 HP  =  745,700 W