US English/Metric Conversion
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US English/Metric Conversion
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US English
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Multiply/ Divide by
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Metric
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In order to calculate US English measurement, divide by the number in the center column.
In order to calculate metric measurement, multiply by the number in the center column.
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Length
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in
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25.4
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mm
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ft
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0.3048
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m
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yd
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0.9144
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mi
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1.609
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km
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Area
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sq in
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645.2
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sq mm
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6.45
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sq cm
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sq ft
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0.0929
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sq m
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sq yd
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0.8361
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Volume
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cu in
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16,387.0
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cu mm
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16.387
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cu cm
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0.0164
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L
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qt
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0.9464
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gal
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3.7854
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cu yd
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0.764
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cu m
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Mass
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lb
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0.4536
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kg
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ton
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907.18
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0.907
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tonne (t)
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Force
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kg F
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9.807
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newtons (N)
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oz F
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0.2780
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lb F
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4.448
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Acceleration
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ft/s
2
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0.3048
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m/s
2
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in/s
2
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0.0254
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Torque
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lb in
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0.11298
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Nm
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lb ft
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1.3558
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Power
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hp
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0.745
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kW
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Pressure (Stress)
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inches of H2O
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0.2488
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kPa
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inches of Mercury (Hg)
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3.377
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lb/sq in
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6.895
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Energy (Work)
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Btu
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1055.0
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J (J= one Ws)
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lb ft
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1.3558
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kW hour
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3,600,000.0
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Light
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Foot Candle
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10.764
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lm/m
2
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Velocity
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mph
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1.6093
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km/h
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Temperature
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(°F - 32) 5/9
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=
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°C
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°F
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=
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(9/5 °C + 32)
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Fuel Performance
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235.215/mpg
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=
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100 km/L
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