Length Converter
Convert between metric and imperial length units.
What is Length?
A length/height/distance converter covering the metric and imperial systems plus specialized units like nautical miles and microns.
How it works
All units are expressed relative to the meter; conversion multiplies by the ratio of the two factors.
- Enter your input. Type or paste your input into the field above — the tool responds instantly.
- Review the result. Output updates live as you type. Everything runs entirely in your browser.
- Copy or download. Use the Copy button to grab the result, or Download to save it as a file.
Examples
Height conversion
Convert 5 feet 10 inches to 177.8 cm in one entry — or any combination of metric and imperial length units.
Common mistakes
Feet and inches entered separately
5.10 is not five foot ten. Enter feet and inches as separate fields, or use inches only, and the converter assembles the total.
Frequently asked questions
Which units are included?
Millimeters to miles: mm, cm, m, km, inches, feet, yards, and miles — including nautical miles where relevant.
Can I convert feet and inches together?
Yes — enter both and get the metric equivalent, or convert the reverse direction into feet plus inches.
Is the conversion exact?
The inch is defined as exactly 2.54 cm, so metric-imperial conversions are exact; rounding applies only to the displayed digits.