Length Converter
Convert length and distance between metric and imperial units: metres, kilometres, centimetres and millimetres, plus inches, feet, yards, miles and nautical miles. Type a value and see it in every unit at once, with exact factors. Free and instant.
Change a measurement from one unit to another without doing the sums yourself. Whether you need cm to inches, metres to feet, km to miles, or how many yards are in a metre, type the number once and read it across every unit. It suits DIY jobs, homework, travel and any time a plan or product lists a unit you do not think in.
- Exact, standard factors
- 100% free
- No sign-up, no app
- Instant as you type
- Works offline after first load
1 m in every unit
How to use it
- 1
Enter the length
Type the measurement you have, such as 30 centimetres or 5 feet.
- 2
Set the units
Choose what you are converting from and to. One click swaps them to run the reverse.
- 3
Read every unit
The exact answer appears at once, with a table of your value in metres, feet, inches, miles and more. Copy any line.
When it comes in handy
DIY and measuring
Switch a measurement between centimetres and inches, or metres and feet, when a tool or plan uses the other system.
Travel and maps
Convert kilometres to miles to make sense of a distance abroad, or the other way round.
School and work
Answer a homework or spec question that mixes metric and imperial units.
Instant, exact & 100% in your browser
The conversion runs right here in your browser using exact, standard factors. Nothing you type is sent to a server, there is no sign-up and no limit, and once the page has loaded it keeps working even with no connection.
Frequently asked questions
- How many centimetres are in an inch?
- Exactly 2.54 centimetres, by definition, which makes one inch 25.4 millimetres. That fixed relationship is what every length conversion between the two systems is built on, so converting cm to inches simply divides by 2.54.
- How do I convert metres to feet?
- One metre is 3.28084 feet, so multiply metres by that number to get feet, or divide feet by it to go back. Ten metres is about 32.8 feet. The converter shows the exact figure alongside inches and yards.
- What is a nautical mile?
- A nautical mile is 1,852 metres, a little longer than a regular mile of 1,609.344 metres. It is used at sea and in the air because it relates neatly to lines of latitude, with one nautical mile being about one minute of latitude.
More tools
More from the Hivly network
Free sister tools on our other sites.
