Our free Length Conversion Calculator instantly converts between kilometres, metres, centimetres, millimetres, miles, feet, inches, yards and nautical miles. Whether you are checking a property’s carpet area dimensions, converting your height from feet to centimetres, or working on a school assignment, just enter a value and get an accurate result in real time — no formulas needed.
Are you tired of struggling with manual length conversions? Whether you’re a student, a professional, an engineer or someone who just needs to convert lengths occasionally, this tool makes it quick and error-free.
Why Use Our Length Conversion Calculator?
1. Hassle-Free Conversions
No more fumbling with formulas or looking up conversion rates online. The calculator converts lengths between units instantly as you type, so there is no room for manual errors.
2. Time-Saving Solution
Instead of spending minutes on manual working, you get the answer immediately — plus the same value in every other unit in the table below the result.
3. Versatile Functionality
Convert inches to centimetres, metres to feet, kilometres to miles or nautical miles to km — nine metric and imperial units are supported in one place.
4. User-Friendly and Mobile-Friendly
The simple layout, swap button and quick chips make it easy for anyone to use on a desktop, tablet or smartphone. It’s web-based and completely free — no installation, subscription or sign-up needed.
How to Use Our Length Conversion Calculator
- Input Value: Enter the length you want to convert (decimals like 5.75 are allowed).
- Select Units: Choose the original unit in “From” (e.g. Foot) and the target unit in “To” (e.g. Centimetre).
- Get Instant Results: The converted length appears immediately — no button press needed.
- Use the ⇆ swap button to reverse the conversion, or tap a quick chip for common conversions like km to miles or feet to cm.
Common Length Conversion Factors
| Unit | Equivalent |
|---|---|
| 1 Kilometre | 1,000 m = 0.621371 miles |
| 1 Mile | 1.609344 km = 5,280 ft |
| 1 Foot | 30.48 cm = 12 inches |
| 1 Inch | 2.54 cm = 25.4 mm |
| 1 Yard | 0.9144 m = 3 ft |
| 1 Nautical mile | 1.852 km |
Frequently Asked Questions
How many centimetres are there in 1 foot?
1 foot is exactly 30.48 cm. So a height of 5 feet 6 inches equals 66 inches × 2.54 = 167.64 cm.
How do I convert kilometres to miles?
Multiply the kilometres by 0.621371. For example, 10 km × 0.621371 = 6.21 miles. To go from miles to km, multiply by 1.609344.
What is the difference between a mile and a nautical mile?
A statute (land) mile is 1,609.344 metres, while a nautical mile is 1,852 metres. Nautical miles are used in aviation and shipping because one nautical mile corresponds to one minute of latitude.
Is this length converter accurate?
Yes. It uses the internationally defined conversion factors (1 inch = 2.54 cm exactly, 1 yard = 0.9144 m exactly) and shows results up to 6–8 decimal places.
Conclusion
Don’t let length conversions slow you down. With our Length Conversion Calculator you get accurate, instant results for every common unit — try it whenever you need a quick conversion.