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Unit Converter

Convert between metric and imperial units instantly — length, weight, volume, area and speed.

Convert units

Result: —
All conversions run locally in your browser.

How to use the Unit Converter

  1. Choose a category such as length, weight or volume.
  2. Enter the value and pick the units to convert from and to.
  3. The converted result updates instantly as you type.

Features

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Frequently Asked Questions

Common questions about the free online unit converter.

Choose a category, enter your value and pick the units to convert between. The result updates instantly and the tool is completely free.
Length, weight, volume, area and speed, covering both metric and imperial units such as metres, feet, kilograms, pounds, litres and gallons.
No. All conversions are calculated locally in your browser, so nothing you type is ever sent anywhere.
The tool uses standard international conversion factors and rounds results to eight decimal places.
Yes. For example you can convert centimetres to inches, kilograms to pounds, or litres to US gallons.
No. The unit converter is fully web based and works in any modern browser.
Yes, the tool is fully responsive and works on phones, tablets and desktops.
No. The converter is free and unlimited — there are no usage caps or accounts.

Last updated: October 10, 2026