Length Converter
Metres, feet, miles, inches and more in one place.
Enter your values
Enter the value you are working with.
Choose one of: Millimetres, Centimetres, Metres, Kilometres, Inches, Feet, Yards, Miles, Nautical miles.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Metres
- 100
- Feet
- 328.08399
- Inches
- 3937.0079
- Miles
- 0.06213712
- Feet and inches
- 328' 1"
| Unit | Value |
|---|---|
| mm | 100000 |
| cm | 10000 |
| m | 100 |
| km | 0.1 |
| in | 3937.007874 |
| ft | 328.08399 |
| yd | 109.36133 |
| mi | 0.062137 |
| nmi | 0.053996 |
Quick answer
One inch is exactly 2.54 cm and one mile is 1.609344 km, which fixes every other length conversion.
At a glance
| What it does | Metres, feet, miles, inches and more in one place. |
|---|---|
| Category | Conversions |
| Inputs needed | Value, From |
| Main output | Metres |
| Cost | Free — no sign-up, no download |
How to use the Length Converter
- 1Enter the value you want to convert.
- 2Pick the unit it is currently in.
- 3Read every other unit at once.
Inputs explained
- Value
- Enter the value you are working with.
- From
- Choose one of: Millimetres, Centimetres, Metres, Kilometres, Inches, Feet, Yards, Miles, Nautical miles.
Worked example
Using the values the calculator loads with:
Inputs
- Value100
- FromMetres
Results
- Metres100
- Feet328.08399
- Inches3937.0079
- Miles0.06213712
- Feet and inches328' 1"
Frequently asked questions
How many feet in a metre?
3.28084 feet, since a foot is defined as exactly 0.3048 metres.
Why is a nautical mile different?
It equals one minute of latitude — 1,852 metres — which makes navigation charts straightforward.
What do I need to enter into the Length Converter?
Just 2 values: value, from. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Length Converter work out the answer?
One inch is exactly 2.54 cm and one mile is 1.609344 km, which fixes every other length conversion. The working is shown step by step so you can verify the result by hand.
Is the Length Converter free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.