Three simple steps
How to use the Unit Converter
- 01
Choose length, weight or temperature.
- 02
Enter a value and select its current unit.
- 03
Choose the target unit and copy the instant result.
Universal converter
Unit Converter
Switch between common metric and imperial length, weight and temperature measurements in one place.
Instant calculation Runs in your browser
Conversion updates instantly and keeps up to eight useful decimal places.
Converted value
3.28083991 Metres = 3.2808399 Feet
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Worked example
Convert 10 kilometres to miles
Calculation10,000 metres ÷ 1,609.344
Result6.21371192 miles
The method
How it works
Shared base units
Length values pass through metres and weight values through kilograms using defined international conversion factors.
Temperature formulas
Celsius acts as the intermediate scale for Fahrenheit and Kelvin conversions, which require offsets as well as multiplication.
Useful precision
Results retain up to eight decimal places while removing unnecessary trailing zeroes.
Helpful answers
Frequently asked questions
Which unit types are included?
The universal converter includes common length, weight and temperature units. Dedicated pages provide faster access to each type.
Are conversion factors exact?
Defined international relationships such as one inch equalling 0.0254 metres are exact. Displayed answers may be rounded.
Can I swap the units?
Yes. Use the swap control between the From and To selectors.