Convert Centimeters to Millimeters
Convert centimeters to millimeters instantly. Type a value below, check the formula and table, then see how the same cm to mm conversion looks as a single line in Notes Calculator.
Centimeters to Millimeters formula
One centimeter is 10 millimeters, so mm = cm × 10. For the reverse, multiply millimeters by 0.1, or use the Millimeters to Centimeters converter.
Centimeters to Millimeters conversion table
| Centimeters (cm) | Millimeters (mm) |
|---|---|
| 1 | 10 |
| 2 | 20 |
| 5 | 50 |
| 10 | 100 |
| 20 | 200 |
| 25 | 250 |
| 50 | 500 |
| 100 | 1,000 |
| 250 | 2,500 |
| 500 | 5,000 |
| 1,000 | 10,000 |
Centimeters to Millimeters in Notes Calculator
Notes Calculator is a notepad that does math. Write 100 cm to mm on any line and the answer appears beside it. Change the number and the result follows. The same works with in and as, and with values stored in variables, so a whole estimate can mix centimeters and millimeters without a separate converter.
| Note | Result |
|---|---|
| 100 cm to mm | 1,000 mm |
| 100 cm in mm | 1,000 mm |
| 10 mm as cm | 1 cm |
See the unit conversion docs for mixing units in one expression, or open the free web app and try it.
FAQ
Frequently asked questions
- One centimeter equals 10 millimeters. To convert centimeters to millimeters, multiply by 10; to go back, multiply by 0.1.
- Type the value, the unit, and the target unit on one line: 100 cm to mm. The keywords to, in, and as all work, and the result updates as you type. You can also keep the value in a variable and convert it later.
- Yes. The converter on this page is free, and Notes Calculator has a free plan for the web, Mac, Windows, Linux, and Android with the same unit conversions built in.
How many millimeters are in one centimeter?
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Convert centimeters to millimeters without leaving your notes.
Notes Calculator is free to start and runs in your browser. Units, currencies, percentages, and variables in one plain-text notepad.
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