To convert length, enter a value, choose the unit you have and the unit you want. The result updates as you type, with a formula line showing the conversion factor. Open All units to see the value in every unit at once, and choose how many decimal places to show.
How to use the Length Converter
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1
Enter a value
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2
Choose “from” and “to” units
Use the swap button to reverse.
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3
Copy the result
Features
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Exact factors
Based on internationally defined values.
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All units at once
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Adjustable precision
2 to 8 decimals.
Supported formats
| Unit | In metres |
|---|---|
| 1 inch | 0.0254 |
| 1 foot | 0.3048 |
| 1 yard | 0.9144 |
| 1 mile | 1,609.344 |
| 1 nautical mile | 1,852 |
Examples
- 1 inch = 2.54 cm (exactly)
- 5 ft 6 in = 167.64 cm
- 10 km = 6.2137 miles
Privacy and file handling
- Where it runs
- Runs in your browser
Runs entirely in your browser. Your files and text are not uploaded to our servers.
Frequently asked questions
How many cm are in an inch?
Exactly 2.54 cm. This definition has been international since 1959.
How do I convert feet and inches to cm?
Multiply feet by 30.48 and inches by 2.54, then add. For 5′6″: 5 × 30.48 + 6 × 2.54 = 167.64 cm.
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