Length, mass and volume converter
Convert common length, mass and volume units, including miles, pounds and US liquid gallons.
Convert only within the same quantity. Volume units use the US liquid gallon and US fluid ounce, not their imperial equivalents. An ounce of mass (oz) is different from a fluid ounce (fl oz). Mass and volume cannot be converted without knowing density.
Calculations run only in this page’s memory. This tool does not send or save your entries or results.
Choose a quantity, enter a value, then select the starting and destination units.
How it works
How it works
Length: m, km, cm, mm, in, ft, yd and mi. Mass: kg, g, lb and oz. Volume: L, mL, US gal and US fl oz. Fixed conversion factors are used: 1 mi = 1.609344 km, 1 lb = 0.45359237 kg and 1 US liquid gal = 3.785411784 L. Displayed results may be rounded.
Example
1 mile (mi) = 1.609344 kilometres (km).
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