Conversion Factors
Common Unit of MASS and WEIGHT
1 pound = 453.59 grams
1 pound = 453.59 grams = 0.45359 kilogram
1 kilogram = 1000 grams = 2.205 pounds
1 gram = 10 decigrams = 100 centigrams
= 1000 milligrams
1 gram = 6.022 × 1023 atomic mass units or u
1 atomic mass unit = 1.6606 × 10–24 gram
1 metric tonne = 1000 kilograms
= 2205 pounds
Common Units of LENGTH
1 inch = 2.54 centimetres (exactly)
1 mile = 5280 feet = 1.609 kilometres
1 yard = 36 inches = 0.9144 metre
1 metre = 100 centimetres = 39.37 inches
= 3.281 feet
= 1.094 yards
1 kilometre = 1000 metres = 1094 yards
= 0.6215 mile
1 Angstrom = 1.0 × 10–8 centimetre
= 0.10 nanometre
= 1.0 × 10–10 metre
= 3.937 × 10–9 inch
Common Unit of VOLUME
1 quart = 0.9463 litre
1 litre = 1.056 quarts
1 litre = 1 cubic decimetre = 1000 cubic
centimetres = 0.001 cubic metre
1 millilitre = 1 cubic centimetre = 0.001 litre
= 1.056 × 10-3 quart
1 cubic foot = 28.316 litres = 29.902 quarts
= 7.475 gallons
Common Units of FORCE and PRESSURE
1 atmosphere = 760 millimetres of mercury
= 1.013 × 105 pascals
= 14.70 pounds per square inch
1 bar = 105 pascals
1 torr = 1 millimetre of mercury
1 pascal = 1 kg/ms2 = 1 N/m2