Unit Converter
Convert between metric and imperial units of length, weight, temperature, area, volume, speed, and time, and between decimal and binary data sizes, with every other unit shown beside the answer.
1 km equals
0.6213711922 mi
The same value in every unit
Metre
1,000 m
Centimetre
100,000 cm
Millimetre
1,000,000 mm
Micrometre
1,000,000,000 µm
Nanometre
1,000,000,000,000 nm
Mile
0.6213711922 mi
Yard
1,093.613298 yd
Foot
3,280.839895 ft
Inch
39,370.07874 in
Nautical mile
0.5399568035 nmi
Type a value, choose two units, and read the result as you type.
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How to use the Unit Converter
Choose a category, such as Length or Temperature.
Type the value, and choose the unit it is in and the unit you want.
Read the answer, and the value in every other unit in the list below it.
Questions about the Unit Converter
Pick the category, then choose a metric unit on one side and an imperial unit on the other. The factors are exact: an inch is 25.4 millimetres, and a pound is 0.45359237 kilograms.
MB counts in thousands, so 1 MB is 1,000,000 bytes, as drives are sold. MiB counts in 1,024s, so 1 MiB is 1,048,576 bytes, as operating systems often show. The data category has both.
Gallons, quarts, pints, cups, and fluid ounces are US measures, and the imperial gallon is listed separately.
Yes, down to absolute zero. Anything colder than minus 273.15 degrees Celsius is not possible, so the tool says so.