Length Converter

Length Converter

20 tools in this category

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Quick answer

Free length and distance converters covering metric and imperial units - metres, centimetres, kilometres, feet, inches, yards and miles. Enter a value and the result appears as you type.

Key facts

  • Covers metric and imperial length units
  • Each conversion has its own page and its own formula
  • Results update as you type, with no button to press
  • Runs in the browser, so nothing is uploaded
  • Free, with no account needed

About these tools

These tools convert a measurement of length or distance from one unit to another. Each pair has its own page - metres to feet, inches to centimetres, kilometres to miles and so on - so the page you land on does exactly one conversion and shows the arithmetic behind it.

Between them they cover the units in everyday use on both sides of the metric and imperial divide, which is where most conversion mistakes happen: a measurement taken in one system and needed in the other.

How to choose

Pick the pair that matches what you have and what you need. If the exact pair is not listed, convert through a common unit - almost everything here converts cleanly via metres or feet.

Frequently asked questions

Are these length conversions exact?

Yes. The conversions use the internationally defined ratios - one inch is exactly 25.4 millimetres, and the rest follow from that - so the only rounding is in how many decimal places are displayed.

Do I need to install anything?

No. The calculation runs in your browser as you type. There is nothing to install and no account to create.

Can I use these on a phone?

Yes. Every converter is built to work on a phone or tablet as well as on a desktop browser.