Length Converter
Free length converter for meters, feet, miles, inches, kilometers, yards and nautical miles. Metric ↔ imperial, no signup, runs in your browser.
Runs in your browserUpdated Apr 27, 2026
Length converter
All length conversions
Millimeter
150 mm
Meter
0.15 m
Kilometer
0.00015 km
Inch
5.905511811 in
Foot
0.4921259843 ft
Yard
0.1640419948 yd
Mile
0.00009320567884 mi
Nautical mile
0.00008099352052 nmi
Frequently asked questions
›How accurate is the length converter?
Conversions use double-precision IEEE-754 floats — accurate to 15 significant digits, more than enough for any practical use including engineering and science.
›Which length units are supported?
Metric (mm, cm, m, km), imperial (in, ft, yd, mi), nautical miles, light years and astronomical units (AU).
›How do I convert meters to feet?
Enter the value in meters, choose feet as the target unit and the result appears instantly. 1 meter equals approximately 3.281 feet.
›Is the length converter free?
Yes — completely free, no signup, no ads. Runs entirely in your browser so your inputs are never sent anywhere.
›Can I share a conversion link?
Yes. The URL updates as you type, so you can bookmark or share any specific conversion.