# Length converter

Convert between metric and imperial lengths

Use it at https://www.quicktoolz.com/tools/length-converter. From QuickToolz.

To convert a length, multiply it by the size of the first unit in metres, then divide by the size of the second. One inch is exactly 2.54 centimetres, one foot is 0.3048 metres, and one mile is 1.609344 kilometres. Type in either box to convert both ways.

## How it works

result = value × metres in first unit ÷ metres in second unit

Every unit here is defined by its exact size in metres. An international agreement in 1959 fixed the inch at 25.4 millimetres, so conversions between metric and imperial are exact, not estimates.

We show up to two decimal places. If a result had to be cut short, we mark it with ≈.

Worked example: To change 10 metres to feet: 10 × 1 ÷ 0.3048 ≈ 32.81 feet.

## Examples

| From | To |
| --- | --- |
| 1 Inches | 2.54 Centimetres |
| 1 Feet | ≈ 0.3 Metres |
| 1 Metres | ≈ 3.28 Feet |
| 1 Miles | ≈ 1.61 Kilometres |
| 1 Kilometres | ≈ 0.62 Miles |
| 100 Centimetres | ≈ 39.37 Inches |

## What this tool doesn't cover

- This uses the international foot, not the older US survey foot.
- Results show up to two decimal places.

## Questions

### How many feet are in a metre?

One metre is about 3.28084 feet, because one foot is exactly 0.3048 metres.

### How many centimetres are in an inch?

One inch is exactly 2.54 centimetres.

### What is a nautical mile?

A nautical mile is exactly 1,852 metres. Ships and aircraft use it.

### How do I convert cm to inches?

Divide the length in centimetres by 2.54. For example, 30 cm is about 11.81 inches.

### How do I convert feet and inches to centimetres?

Multiply the feet by 12, add the inches, then multiply by 2.54. So 5 feet 8 inches is 68 inches, or 172.72 cm.

## Sources

- [NIST Office of Weights and Measures](https://www.nist.gov/pml/owm)
- [BIPM: the metre](https://www.bipm.org/en/measurement-units)