Length Converter
1 m = 0.001 km
About the length category
Distance and length: how far things are, from screw sizes to road trips.
You will reach for these conversions when reading product specs from US websites while living in a metric country (TV sizes, lumber, pipe diameter), or planning road trips in countries that use a different system than your car navigation.
- A tall door frame is about 1.83 m, or 6 feet
- A comfortable 5 km (3.1 mi) neighborhood run
- A marathon is 26.2 miles, about 42.2 km
Popular length conversions
Common mistakes
- Mixing up nautical miles (1,852 m) with statute miles (1,609.344 m); aviation and shipping use nautical miles
- US survey feet differ slightly from international feet; irrelevant for daily life, but matters in land surveying
Frequently asked questions
Which length units does this converter support?
10 units: Meter, Kilometer, Centimeter, Millimeter, Micrometer, Nanometer, and more. All conversions run locally in your browser, nothing is sent to a server.
How accurate are the length conversions?
All factors follow the official SI definitions and internationally agreed standards. Results are shown with up to 8 significant digits, which is far beyond the precision of everyday measurements.
Is this converter free?
Yes, completely free and unlimited, supported by ads. No app install, no sign-up.