Engineering & Design
Conversion Formulas
Description
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 |