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Standard Conversion Factors

To use this chart:    
From X Multiplier = Into  
Into X Reciprocal = From  
     
     
From Into Multiplier  Reciprocal
Inches  Millimeters  25.4 0.0394
Length      
1/8ths of inches  Millimeters  3.175 0.315
1/16ths of inches  Millimeters  1.587 0.63
Inches  Meters  0.0254 39.37
Feet  Meters  0.3048 3.281
Yards  Meters  0.914 1.094
Miles  Kilometers  1.609 0.621
Sea Miles  Meters  1852 0.000539
Miles  Meters  1609.3 0.000621
Area      
Square inches  Square centimeters  6.4516 0.155
Square feet  Square meters  0.0929 10.764
Volume      
Cubic inches  Cubic centermeters  16.387 0.061
Cubic inches  Liters  0.016 62.5
Cubic feet  Cubic meters  0.028 35.315
Cubic yards  Cubic meters  0.765 1.308
Imperial gallons  Liters  4.546 0.22
USA gallons  Liters  3.785 0.264
Imperial gallons  USA gallons  1.205 0.83
Weight      
Grams  Ounces  0.035 28.35
Pounds (lbs.)  Kilograms  0.454 2.205
Hundredweights (cwt)  Kilograms  50.802 0.02
Tons  French tonnes  1.016 0.984
Density      
Pounds per cubic foot  Kilograms per cubic meter  16.019 0.0624
Speed      
Kilometers per hour  Meters per second  0.278 3.6
Meters per second  Knots  1.943 --
Feet per second  Meters per second  0.305 3.281
Feet per second  Miles per hour  0.682 1.467
Feet per minute  Kilometers per hour  0.018 54.68
Miles per hour  Meters per second  0.447 2.237
Miles per hour  Kilometers per hour  1.609 0.621
Knots  Miles per hour  1.151 --
Horsepower (hp)  kilowatts (kW)  0.746 1.341

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Last modified: November 10, 2015