Length Converter
Convert a length between millimetres, centimetres, metres, kilometres, inches, feet, yards, miles and nautical miles. Calculated in your browser.
- Runs entirely in your browser
- No sign-up, no watermark
- Free and unlimited
🔒 Your file stays on your device
How to use Length Converter
- 1
Open Length Converter and fill in the fields.
- 2
Pick any options that apply.
- 3
Read the result straight away — it recalculates as you type.
What you get
- 9 metric and imperial units
- Shows the conversion rate too
- Instant, offline in your browser
What happens to your files
This tool runs entirely in your browser. The file you choose is read into memory, processed on your device, and offered back as a download. Nothing is uploaded and nothing is kept once you leave the page.
There is no account, no email, no watermark and no daily limit. Come back whenever you need it.
Frequently asked questions
- How precise is it?
- Conversions use exact factors (1 inch = 25.4 mm, 1 mile = 1609.344 m) and the result is shown to up to 8 significant figures.