ConvBolt — Unit ConverterMillimeter (mm) Converter Hub
The millimeter (mm) is one of the units in the length family. Rather than jump between 7 separate converter pages, this hub gathers every mm conversion in one place: the table below gives the factor for each partner unit in both directions, so you can see at a glance whether a value will come out larger or smaller.
The numbers are exact to seven significant figures, which is more precision than most day-to-day work needs but matters when a factor is applied repeatedly in a spreadsheet or a batch calculation. As a quick sense of scale: 1000 mm = 100 cm, and 1000 mm = 1 m.
Every row links to a dedicated converter with a worked example, a full value table and the reverse page, so you can go straight from this overview to the specific conversion you need.
All mm conversions
| Convert from mm | Factor | Convert to mm |
|---|---|---|
| mm to cm | 0.1 cm | cm to mm |
| mm to m | 0.001 m | m to mm |
| mm to km | 1.0000e-6 km | km to mm |
| mm to in | 0.03937008 in | in to mm |
| mm to ft | 0.00328084 ft | ft to mm |
| mm to yd | 0.001093613 yd | yd to mm |
| mm to mi | 6.2137e-7 mi | mi to mm |
Popular mm conversions
Use any of the converters in the table above.
Frequently asked questions
How many units can the mm be converted to?
7 partner units in the Length family: cm, m, km, in, ft, yd, mi.
What is the mm conversion factor?
Millimeter: 1 mm = 0.1 cm; 1 mm = 0.001 m; 1 mm = 1.0000e-6 km, and so on for every other partner unit.
Back to the Length conversions hub, the ConvBolt Unit Converter, or browse our conversion guides.