Quick answer
Type a number, choose the unit you have and the unit you want. For example, 1 inch = 2.54 cm, 1 foot = 30.48 cm, 1 metre = 3.2808 feet and 1 mile = 1.609 km.
- 1 inch:
- 2.54 cm (exact)
- 1 foot:
- 12 in = 30.48 cm
- 1 metre:
- 3.28084 ft
- 1 mile:
- 1.609344 km
- 1 nautical mile:
- 1,852 m
- Units:
- 10 metric & imperial
Whether you are reading a product size from an American store, checking your height in feet, or planning a run in miles, our length converter switches between metric and imperial units in real time. The conversion factors are the official international definitions (for example, the inch has been defined as exactly 2.54 cm since 1959), so your results are precise.
How to use Length Converter – step by step
- 1 Enter a valueType the length you want to convert.
- 2 Pick the unitsChoose the “From” and “To” units. Use the swap button to reverse them.
- 3 Read every resultThe answer appears instantly, plus the same length in every other unit below.
Why use our Length Converter?
Metric & imperial
mm, cm, m, km, µm, inches, feet, yards, miles and nautical miles.
Exact factors
Uses the international definitions of the inch, foot and mile.
All units at once
See your value in every unit without changing the dropdowns.
Works offline
Once loaded, conversions run in your browser.
Common length conversion tables
Centimetre to Inch
| Centimetre (cm) | Inch (in) |
|---|---|
| 1 cm | 0.39370079 in |
| 5 cm | 1.9685 in |
| 10 cm | 3.937 in |
| 25 cm | 9.8425 in |
| 50 cm | 19.685 in |
| 100 cm | 39.3701 in |
Foot to Metre
| Foot (ft) | Metre (m) |
|---|---|
| 1 ft | 0.3048 m |
| 5 ft | 1.524 m |
| 10 ft | 3.048 m |
| 25 ft | 7.62 m |
| 50 ft | 15.24 m |
| 100 ft | 30.48 m |
Kilometre to Mile
| Kilometre (km) | Mile (mi) |
|---|---|
| 1 km | 0.62137119 mi |
| 5 km | 3.1069 mi |
| 10 km | 6.2137 mi |
| 25 km | 15.5343 mi |
| 50 km | 31.0686 mi |
| 100 km | 62.1371 mi |
How to convert height to feet and inches
Divide your height in centimetres by 2.54 to get inches, then divide by 12: the whole number is feet and the remainder is inches. For example, 175 cm ÷ 2.54 = 68.9 in = 5 ft 8.9 in.
Frequently asked questions
How many centimetres are in an inch?
How many feet are in a metre?
How do I convert km to miles?
What is a nautical mile?
Last updated November 2026 · Written and tested by the SmallEasyTools team.