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) – A Unit(Symbol) – B Factor
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 (sq.in) Square Centimetres (sq.cm) 6.4516
Cubic Inches (cu.in) Cubic Centimetres (cu.cm) 16.3871
Cubic Inches (cu.in) Litres (L) 0.0163871
Pounds (lb) – mass Kilograms (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/sq.cm) Bar (bar) 0.1