Convert Millimeters (mm) to Centimeters (cm) instantly — free length converter, no sign-up.
1 mm (millimeters) = 0.1 cm (centimeters)
cm = mm × 0.1
To convert 25 millimeters to centimeters, multiply by 0.1 (25 × 0.1) — which gives 2.5 cm.
| Millimeters | Centimeters |
|---|---|
| 1 mm | 0.1 cm |
| 2 mm | 0.2 cm |
| 5 mm | 0.5 cm |
| 10 mm | 1 cm |
| 25 mm | 2.5 cm |
| 50 mm | 5 cm |
| 100 mm | 10 cm |
| 500 mm | 50 cm |
| 1000 mm | 100 cm |
Length conversions move between the metric system (millimetres, centimetres, metres, kilometres), which is decimal and scales by powers of ten, and the imperial/US customary system (inches, feet, yards, miles), which does not. The metre is the SI base unit and every conversion here is defined against it: the inch has been exactly 25.4 mm since the 1959 international yard and pound agreement, which is why these factors are exact rather than approximate.