Conversion Formulas

Use the below calculators to convert to your required metrics.

  • Length
  • Area
  • Volume
  • Mass
  • Power
  • Pressure

To convert A into B, multiply by the factor below.
To convert B into A, divide by the factor below.

Unit(Symbol) – AUnit(Symbol) – BFactor
Inches (in)Millimetres (mm)25.4
Inches (in)Centimetres (cm)2.54
Inches (in)Metres (m)0.0254
Feet (ft)Metres (m)0.3084
Square Inches ( Centimetres (
Cubic Inches ( Centimetres (
Cubic Inches ( (L)0.0163871
Pounds (lb) – massKilograms (kg)0.4536
Pounds per square inch (psi)Bar (bar)0.06894
Megapascals (MPa)Bar (bar)10
Horsepower (hp)Kilowatts (kW)0.7457
US Gallons (gal-US)Litres (lit)3.78531
Newtons/sq.centimetre (N/ (bar)0.1