Millimeters to centimeters
centimeters = millimeters × 0.1
Reverse: centimeters to millimeters
How to convert millimeters to centimeters
One millimeter is 0.1 centimeters, so multiply the number of millimeters by 0.1. For example, 20 millimeters is 20 × 0.1 = 2 centimeters. To go back, divide by the same number, or multiply by 10.
Quick estimate
Multiplying by about 0.1 gets within 0.0% of the exact answer, which is enough to check that a result makes sense.
Where it comes up
Length conversions come up in DIY and building plans, running and cycling distances, maps, clothing sizes and travel between countries that use metric and imperial units.
| millimeters | centimeters |
|---|---|
| 1 mm | 0.1 cm |
| 2 mm | 0.2 cm |
| 3 mm | 0.3 cm |
| 4 mm | 0.4 cm |
| 5 mm | 0.5 cm |
| 6 mm | 0.6 cm |
| 7 mm | 0.7 cm |
| 8 mm | 0.8 cm |
| 9 mm | 0.9 cm |
| 10 mm | 1 cm |
| 11 mm | 1.1 cm |
| 12 mm | 1.2 cm |
| 13 mm | 1.3 cm |
| 14 mm | 1.4 cm |
| 15 mm | 1.5 cm |
| 16 mm | 1.6 cm |
| 17 mm | 1.7 cm |
| 18 mm | 1.8 cm |
| 19 mm | 1.9 cm |
| 20 mm | 2 cm |
| 25 mm | 2.5 cm |
| 30 mm | 3 cm |
| 40 mm | 4 cm |
| 50 mm | 5 cm |
| 60 mm | 6 cm |
| 70 mm | 7 cm |
| 75 mm | 7.5 cm |
| 80 mm | 8 cm |
| 90 mm | 9 cm |
| 100 mm | 10 cm |
| 120 mm | 12 cm |
| 150 mm | 15 cm |
| 200 mm | 20 cm |
| 250 mm | 25 cm |
| 300 mm | 30 cm |
| 400 mm | 40 cm |
| 500 mm | 50 cm |
| 750 mm | 75 cm |
| 1,000 mm | 100 cm |
| 1,500 mm | 150 cm |
| 2,000 mm | 200 cm |
| 5,000 mm | 500 cm |
| 10,000 mm | 1,000 cm |
Questions
How many centimeters are in a millimeter?
0.1 centimeters.
How do I convert millimeters to centimeters in a spreadsheet?
Put the value in A1 and type =A1*0.1, then fill the formula down the column.
Are the values in the table exact?
They are calculated from the exact definitions of the units and rounded only for display. Open any row for the full working.