Unit Converter
Convert between metric and imperial length units instantly.
Result
0.621371
How it works
Every unit is defined by its size in meters, so a conversion works in two steps: the value is converted to meters, then divided by the size of the unit you want. This avoids a separate formula for each pair of units and keeps results consistent in both directions.
Supported units
Millimeters, centimeters, meters, and kilometers on the metric side; inches, feet, yards, and miles on the imperial side.
Example
1 kilometer = 1,000 meters → 1,000 ÷ 1,609.344 = 0.621371 miles
Frequently asked questions
- Which units are supported?
- Millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles. More unit categories such as weight and temperature are planned.
- How accurate are the conversions?
- Conversions use standard internationally defined constants (for example, 1 inch = 2.54 cm exactly), so results are precise.