Unit converters calculators.
Convert everyday, trade and engineering units with the convention and scope of every conversion shown clearly.
Unit converters
Convert everyday, trade and engineering units with the convention and scope of every conversion shown clearly.
Volume and volumetric weight converter
Convert litres, US and UK gallons, fluid ounces, cups, tablespoons, cubic feet and cubic metres; estimate freight volumetric weight.
- US and UK gallons
- CFT and m³
- Editable freight factor
Weight and mass converter
Convert kilograms, pounds, grams, ounces, metric tonnes, quintals and maund conventions.
- kg, lb, g and oz
- Metric tonnes and quintals
- Maund convention
Length and distance converter
Convert feet, inches, centimetres, metres, yards, kilometres, miles, microns, millimetres and material gauge.
- Metric and imperial
- Distance conversions
- Micron and gauge screen
Energy, power and pressure converter
Convert horsepower, kilowatts, BTU per hour, refrigeration tons, PSI, bar and pascals.
- HP and kW
- BTU/h and TR
- PSI, bar and Pa
Speed, temperature and flow converter
Convert km/h and mph, Celsius/Fahrenheit/Kelvin, LPM/GPM and CFM/m³ per hour.
- Speed and temperature
- LPM and GPM
- CFM and m³/h
Start from the quantity you actually measured
A conversion only changes the expression of the same quantity. Choose the source unit from the label, drawing, meter, scale or contract before comparing a result.
State the convention where names vary
US and UK gallons, maund, gauge, recipe measures and freight volumetric factors can differ. The converter presents those choices rather than silently assuming a single global value.