Conversions Calculators
Convert between common automotive units: speed, distance, pressure, torque, and temperature.
MPH to KPH Converter
Convert between miles per hour and kilometres per hour.
Miles to Kilometres Converter
Convert distances between miles and kilometres.
Litres to Gallons Converter
Convert between litres and UK/US gallons.
PSI to Bar Converter
Convert tyre pressures between PSI, bar, and kPa.
Nm to ft-lb Converter
Convert torque values between Newton-metres and foot-pounds.
BHP to PS Converter
Convert between brake horsepower, PS (metric horsepower), and kW.
Cubic Inches to CC Converter
Convert engine displacement between cubic inches and cubic centimetres.
mpg to L/100km Converter
Convert fuel economy between UK mpg and litres per 100km.
Inches to mm Converter
Convert between inches and millimetres for automotive parts.
Fahrenheit to Celsius Converter
Convert temperatures between Fahrenheit and Celsius.
10 free calculators in Conversions
Automotive Unit Conversion Tools
The UK uses a unique mix of imperial and metric measurements for motoring. We drive in miles per hour but buy fuel in litres. We measure tyre pressure in PSI but European cars display bar. Our conversion calculators handle every common automotive unit conversion instantly.
The MPH to KPH converter is essential for driving in Europe, where speed limits are posted in kilometres per hour. The litres to gallons converter handles both UK imperial gallons and the smaller US gallons, which is important when comparing fuel economy figures from different countries.
For enthusiasts and mechanics, the torque converter switches between Nm and ft-lb, while the BHP to PS converter clarifies the difference between British brake horsepower and the metric PS (Pferdstarke) used by European and Japanese manufacturers. Every conversion uses the precise mathematical factors rather than rough approximations.