Length Converter
Convert mm, cm, m, km, in, ft, yd, mi, and nautical miles within the same physical quantity of length.
How to use
- Enter a length, then choose the source and target among mm, cm, m, km, in, ft, yd, mi, and nmi.
Capabilities and scope
The meter is the shared reference, allowing metric and customary length units to be compared in either direction, including nautical miles.
How it works
Each unit is normalized by its meter factor and divided by the destination factor. The implementation uses 1 in = 0.0254 m, 1 mi = 1609.344 m, and 1 nmi = 1852 m.
Example
1 mile is 1609.344 m, or about 1.609344 km.
Useful for
- Convert drawing dimensions between inches and meters
- Compare road distances in miles and kilometers
- Convert nautical distances to metric units
Before you use it
- This converts numeric length units; it does not calculate geographic path distance or map scale.
Standards and references
Frequently asked questions
Is a nautical mile the same as a mile?
No. The nautical mile here is 1852 m; the ordinary mile is 1609.344 m.