Looking for a unit converter length weight temperature volume? This free tool gives you metres to feet, kg to pounds, Celsius to Fahrenheit and many more. Just enter your numbers and press Calculate — results are instant.
Unit conversion is multiplication by a fixed factor: every unit is stored as its value in one base unit, so converting is just dividing by the factor. Length uses metres, weight uses kilograms, volume uses litres, area uses square metres and speed uses metres per second. Temperature is the exception — Celsius, Fahrenheit and Kelvin are converted with their own formulas instead of a single factor. Pick the type, the from-unit and the to-unit, and the calculator also shows the reverse rate.
Example: Length · Value 10 · From metres (m) · To feet (ft)
Result: 32.808399 ft
Because Celsius, Fahrenheit and Kelvin do not differ by a single multiplier — they have different zero points as well. Converting needs the full formula (for example, Fahrenheit = Celsius × 9/5 + 32), so the calculator treats temperature separately.
Results are shown to 4 or 6 decimal places. The conversion factors used are the standard ones, so the maths is exact — any small difference from another converter is just rounding.
Length, weight, temperature, volume, area and speed — with the common units for each, like metres, feet, kilograms, pounds, litres, gallons, square metres, acres, km/h and mph.