Length Converter

Convert between metric (mm, cm, m, km) and imperial (in, ft, yd, mi) units instantly.

Reviewed by the WorldCalcs team · Methodology · Last reviewed: June 2026

Result

3.2808399 ft

1 m = 3.2808399 ft

All units

1 m converted into every supported unit.

UnitValue
Millimeter (mm)1 000
Centimeter (cm)100
Meter (m)1
Kilometer (km)0.001
Inch (in)39.370079
Foot (ft)3.2808399
Yard (yd)1.0936133
Mile (mi)0.00062137119

What is a length converter?

A length converter changes a measurement from one unit of length to another — for example centimetres to inches, or miles to kilometres. It works for both metric units (millimetre, centimetre, metre, kilometre) and imperial/US units (inch, foot, yard, mile).

How it works

Every length unit has a fixed ratio to the metre. The converter turns your value into metres, then into the unit you want. The key ratios are exact by international agreement: 1 inch = 2.54 cm, 1 foot = 0.3048 m, and 1 mile = 1.609344 km. These never change, so results stay the same forever.

All calculations happen in your browser. Nothing is sent, stored, or tracked.

Results are estimates and may contain errors — for general information only, not professional advice. Always verify before relying on them. Disclaimer

How to use

Type a value, then pick the unit you have it in and the unit you want it in. The result updates instantly. You can swap directions or change either unit at any time.

All conversions go through meters using the internationally defined factors (1 inch = 0.0254 m, 1 foot = 0.3048 m, 1 mile = 1609.344 m), so the result is exact to high precision.

Frequently asked questions

Are the conversion factors exact?+

Yes. International definitions are used: 1 inch = 0.0254 m, 1 foot = 0.3048 m, 1 yard = 0.9144 m, 1 mile = 1609.344 m. Metric units convert via clean powers of ten.

How many decimal places are shown?+

Up to 8 significant digits, with trailing zeros trimmed. For most practical work that's more precision than the original measurement.

Does it handle very large or very small numbers?+

Yes. You can convert anything from millimeters to miles. For extreme scientific use, copy the raw input/output — JavaScript double precision still applies.

How many centimetres are in an inch?+

Exactly 2.54 cm. This value is fixed by international definition.

How many feet are in a metre?+

About 3.2808399 feet (1 m = 100 / 2.54 / 12 ft).

How many kilometres are in a mile?+

Exactly 1.609344 km.

Is a yard longer than a metre?+

No. One yard is 0.9144 m, so a metre is slightly longer (about 9% more).