Length Converter

Convert lengths and distances between 18 metric and imperial units – from nanometres to nautical miles, including centimetres, millimetres, kilometres, hectometres, inches, feet, yards and miles. All factors are exact definitions (1 inch = 2.54 cm).

  • Number → Converted value, Full conversion table
  • Runs in your browser
  • Free, no sign-up
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How to use Length Converter

  1. Type the value you want to convert.
  2. Choose the unit you are converting from and the unit you want.
  3. Read the result instantly – every other unit is listed in the table below it.
  4. Use “Copy” to copy the result, or “Swap” to convert the other way.

Common length conversions

FromEquals
1 Metre (m)100 cm (Centimetre)
1 Centimetre (cm)10 mm (Millimetre)
1 Kilometre (km)1,000 m (Metre)
1 Hectometre (hm)100 m (Metre)
1 Centimetre (cm)0.3937007874 in (Inch)
1 Inch (in)2.54 cm (Centimetre)
1 Foot (ft)0.3048 m (Metre)
1 Metre (m)3.280839895 ft (Foot)
1 Kilometre (km)0.6213711922 mi (Mile)
1 Mile (mi)1.609344 km (Kilometre)
1 Yard (yd)0.9144 m (Metre)
1 Nautical mile (nmi)1.852 km (Kilometre)

Metre to Centimetre table

Metre (m)Centimetre (cm)
1 m100 cm
2 m200 cm
5 m500 cm
10 m1,000 cm
20 m2,000 cm
25 m2,500 cm
50 m5,000 cm
100 m10,000 cm
500 m50,000 cm
1,000 m100,000 cm

Units in this converter

Nanometre (nm), Micrometre (micron) (µm), Millimetre (mm), Centimetre (cm), Decimetre (dm), Metre (m), Decametre (dam), Hectometre (hm), Kilometre (km), Mil (thou) (mil), Inch (in), Foot (ft), Yard (yd), Fathom (ftm), Chain (ch), Furlong (fur), Mile (mi), Nautical mile (nmi).

Examples

  • 5 ft 10 in ≈ 1.778 m (70 in × 2.54 cm)
  • 10 km = 6.2137 miles
  • 1 hectometre = 100 metres = 10,000 cm

Supported formats

InputNumber
OutputConverted value, Full conversion table
ProcessingOn your device, in the browser (no upload)

Limitations to know

  • Feet and inches are entered as one unit at a time (e.g. convert 70 in, or 5.8333 ft).
  • Results are shown to up to 10 significant digits; extremely large or small values switch to scientific notation (e.g. 1.5e-12).

Privacy: Length Converter runs entirely in your web browser. Your Number data is not uploaded, stored or shared, and nothing about its contents is sent to analytics.

Frequently asked questions

How many centimetres are in a metre?

There are exactly 100 centimetres in a metre, and 1,000 millimetres. A kilometre is 1,000 metres, and a hectometre is 100 metres.

How do I convert centimetres to inches?

Divide by 2.54. For example, 30 cm ÷ 2.54 = 11.81 inches. To go from inches to centimetres, multiply by 2.54.

What is the difference between a mile and a nautical mile?

A statute mile is 1,609.344 m and is used on roads. A nautical mile is 1,852 m and is used at sea and in aviation.

References

Last updated · Maintained by the ZippyToolkit team