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Conversion Factors

Below are instructions for converting factors, including changing acres to hectares, Btu/hour to horsepower, centimeters to inches, degrees to radians, feet to miles, furlongs to feet, liters to gallons, and more. See also the Infoplease.com conversion calculator

To changeToMultiply
by
acreshectares.4047
acressquare feet43,560
acressquare miles.001562
atmospherescms. of mercury76
Btu/hourhorsepower.0003930
Btukilowatt-hour.0002931
Btu/hourwatts.2931
bushelscubic inches2150.4
bushels (U.S.)hectoliters.3524
centimetersinches.3937
centimetersfeet.03281
cubic feetcubic meters.0283
cubic meterscubic feet35.3145
cubic meterscubic yards1.3079
cubic yardscubic meters.7646
degreesradians.01745
dynesgrams.00102
fathomsfeet6.0
feetmeters.3048
feetmiles (nautical).0001645
feetmiles (statute).0001894
feet/secondmiles/hour.6818
furlongsfeet660.0
furlongsmiles.125
gallons (U.S.)liters3.7853
grainsgrams.0648
gramsgrains15.4324
gramsounces (avdp).0353
gramspounds.002205
hectaresacres2.4710
hectolitersbushels (U.S.)2.8378
horsepowerwatts745.7
horsepowerBtu/hour2,547
hoursdays.04167
inchesmillimeters25.4000
inchescentimeters2.5400
kilogramspounds (avdp or troy)2.2046
kilometersmiles.6214
kilowatt-hourBtu3412
knotsnautical miles/hour1.0
knotsstatute miles/hour1.151
litersgallons (U.S.).2642
literspecks.1135
literspints (dry)1.8162
literspints (liquid)2.1134
litersquarts (dry).9081
litersquarts (liquid)1.0567
metersfeet3.2808
metersmiles.0006214
metersyards1.0936
metric tonstons (long).9842
metric tonstons (short)1.1023
mileskilometers1.6093
milesfeet5280
miles (nautical)miles (statute)1.1516
miles (statute)miles (nautical).8684
miles/hourfeet/minute88
millimetersinches.0394
ounces (avdp)grams28.3495
ouncespounds.0625
ounces (troy)ounces (avdp)1.09714
pecksliters8.8096
pints (dry)liters.5506
pints (liquid)liters.4732
pounds (ap or troy)kilograms.3732
pounds (avdp)kilograms.4536
poundsounces16
quarts (dry)liters1.1012
quarts (liquid)liters.9463
radiansdegrees57.30
rodsmeters5.029
rodsfeet16.5
square feetsquare meters.0929
square kilometerssquare miles.3861
square meterssquare feet10.7639
square meterssquare yards1.1960
square milessquare kilometers2.5900
square yardssquare meters.8361
tons (long)metric tons1.016
tons (short)metric tons.9072
tons (long)pounds2240
tons (short)pounds2000
wattsBtu/hour3.4121
wattshorsepower.001341
yardsmeters.9144
yardsmiles.0005682
NOTE: avdp = avoirdupois weight, ap = apothecaries' weight.See also Customary U.S. Weights and Measures

 

MeasurementConversion of Miles to Kilometers and Kilometers to Miles