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Metric/Imperial Conversions  

Contents
Length
Area
Mass/Weight
Volume
Lumination
Pressure
Power/Energy

 

Length
Metric to Imperial Imperial to Metric
1 millimeter = 0.04 inches 1 inch = 25.4 millimeters
1 centimeter = 0.4 inches 1 foot = 30.48 centimeters
1 meter = 3.3 feet 1 yard = 0.91 meters
1 kilometer = 0.62 miles 1 mile = 1.61 kilometers
1 kilometer = 0.54 nautical miles 1 nautical mile = 1.85 kilometers

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Area
Metric to Imperial Imperial to Metric
1 square centimeter = 0.16 square inches 1 square inch = 645.2 square millimeters
1 square meter = 1.2 square yards 1 square inch = 6.5 square centimeters
1 square kilometer = 0.4 square miles 1 square foot = 0.09 square meters
1 hectare = 2.47 acres 1 square yard = 0.84 square meters
= 1 acre = 4047 square meters
= 1 acre = 0.4 hectares
= 1 square mile = 2.59 square kilometers

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Mass/Weight
Metric to Imperial Imperial to Metric
1 gram = 0.035 ounces 1 ounce = 28.35 grams
1 kilogram = 2.2 pounds 1 pound = 0.454 kilograms
1  metric tonne = 0.98 UK ton 1 stone = 6.35 kilograms
= 1 cwt (hundredweight) = 50.8 kilograms
= 1 UK ton = 1.016 metric tonnes

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Volume
Metric to Imperial Imperial to Metric
1 millilitre = 0.03 fluid ounces 1 fluid ounce = 30 millilitres
1 litre = 2.1 pints 1 pint = 0.57 litres
1 litre = 1.06 quarts 1 quart = 0.95 litres
1 litre = 0.22 imperial (UK) gallons 1 imperial (UK) gallon = 4.54 litres
1 litre = 0.264 US gallons 1 US gallon = 3.79 litres
1 cubic meter = 35 cubic feet 1 barrel (of oil) = 159 litres
1 cubic meter = 1.13 cubic yards 1 cubic inch = 16.39 cubic centimeters
= 1 cubic foot = 0.03 cubic meters
= 1 cubic yard = 0.76 cubic meters

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Lumination
Metric to Imperial Imperial to Metric
1 lux = 0.093 foot candle 1 foot candle = 10.76 lux
1 candela/square meter = 3.43 foot lambert 1 foot lambert = 0.30 candela/square meter
= =
= =

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Pressure
Metric to Imperial Imperial to Metric
1 bar = 14.5 pounds / square inch 1 pound / square inch = 6.9 kilopascal
1 kilopascal = 0.145 pounds / square inch 1 pound / square inch = 0.069 bar

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Power/Energy
Metric to Imperial Imperial to Metric
1 kilowatt = 1.36 horsepower 1 horsepower = 0.746 kilowatts
1 joule = 0.001 BTU 1 BTU = 1055.1 joules
1 watt-hour = 3.41 BTU 1 BTU = 0.293 watt-hours

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Author: Bill Wood 
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