Conversion Factors

  Length   Multiply by
   Inches to Centimetres    2.54
   Centimetres to Inches    0.39
   Inches to Millimetres    25.40
   Millimetres to Inches    0.04
   Feet to Metres    0.31
   Metres to Feet    3.28
   Yards to Metres    0.91
   Metres to Yards    1.09
   Miles to Kilometres    1.61
   Kilometres to Miles    0.62

  Area   Multiply by
   Square Inches to Square Centimetres    6.451
   Square Centimetres to Square Inches    0.15
   Square Feet to Square Metres    0.09
   Square Metres to Square Feet    10.76
   Square Yards to Square Metres    0.84
   Square Metres to Square Yards    1.20
   Square Miles to Square Kilometres    2.59
   Square Kilometres to Square Miles    0.39
   Acres to Hectares    0.40
   Hectares to Acres    2.47

  Volume   Multiply by
   Cubic Inches to Cubic Centimetres    16.39
   Cubic Centimetres to Cubic Inches    0.06
   Cubic Feet to Cubic Metres    0.03
   Cubic Metres to Cubic Feet    35.32
   Cubic Yards to Cubic Metres    0.76
   Cubic Metres to Cubic Yards    1.31
   Cubic Inches to Litres    0.02
   Litres to Cubic Inches    61.03
   Gallons to Litres    4.55
   Litres to Gallons    0.22
  US Gallons to Litres    3.79
   Litres to US Gallons    0.26
   Fluid Ounces to Cubic Millilitres    30.77
   Cubic Millilitres to Fluid Ounces    0.03

  Weight   Multiply by
   Ounces to Grams    28.35
   Grams to Ounces    0.04
   Pounds to Kilograms    0.45
   Kilograms to Pounds    2.21
   Long Tons to Tonnes    1.02
   Tonnes to Long Tons    0.98
   Short Tons to Tonnes    0.91
   Tonnes to Short Tons    1.10