Length Conversions — All 8 Units

ConvBolt Unit Converter · Updated 2026-10-04

Length covers 8 units — mm, cm, m, km, in, ft, yd, mi. This page is the map for the family: every unit below links to a hub that lists its conversions to all the others, and each conversion has its own page with the exact factor, a value table and a worked example.

The pages here are generated from fixed conversion factors, so a number you get from a table, from a hub or from the on-page calculator is always the same. Nothing is rounded behind the scenes and no value depends on which page you started from.

Most-used length conversions

Cm → In M → Ft Km → Mi

All length units

Millimeter (mm)

mm → cm mm → m mm → km mm → in all →

Centimeter (cm)

cm → mm cm → m cm → km cm → in all →

Meter (m)

m → mm m → cm m → km m → in all →

Kilometer (km)

km → mm km → cm km → m km → in all →

Inch (in)

in → mm in → cm in → m in → km all →

Foot (ft)

ft → mm ft → cm ft → m ft → km all →

Yard (yd)

yd → mm yd → cm yd → m yd → km all →

Mile (mi)

mi → mm mi → cm mi → m mi → km all →

Frequently asked questions

How many length units does this converter support?
8: Millimeter (mm), Centimeter (cm), Meter (m), Kilometer (km), Inch (in), Foot (ft), Yard (yd), Mile (mi).

How do I convert between two length units?
Pick the unit you have and the unit you want in the converter above, or open the hub for either unit to see the factor against every partner unit.

Other categories

Weight Volume Temperature Speed

Try the ConvBolt Unit Converter or browse our conversion guides.