Length Converter
Convert length and distance measurements between metric and imperial units.
How It Works
- 1Enter a value.
- 2Choose the units to convert from and to.
- 3See the result instantly.
Features
- 8 common length units
- Swap units with one click
Privacy
All conversions happen instantly in your browser using fixed conversion factors.
About Length Converter
Length conversions mostly come down to two systems: the metric system, built around the meter and powers of ten, and the imperial/US customary system, built around the inch, foot, mile and yard. Since 1959 these systems have been tied together by an exact international definition — one inch equals precisely 2.54 centimeters — so conversions between them are exact, not approximations.
This makes the tool useful for anything that crosses systems: reading a recipe or furniture dimensions in centimeters when you think in inches, checking a road sign in kilometers against miles, or converting a height, room measurement, or fabric length for a project.
One thing worth knowing: the mile used for roads (5,280 feet) is not the same as a nautical mile used at sea or in aviation, which is based on a different definition tied to the Earth's circumference and is about 15% longer. If a result looks off by that margin, check which type of mile is intended.