Millimeters to Centimeters Converter
Quick answer: To convert millimeters to centimeters, multiply by 0.1. For example, 10 mm is 1 cm. One millimeter equals 0.1 cm.
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Use the Millimeters to Centimeters Converter
Millimeters to Centimeters formula and what each symbol means
cm = mm × 0.1
| Symbol | Meaning |
|---|---|
| mm | Millimeter |
| cm | Centimeter |
Millimeters to Centimeters examples
1 mm
1 mm × 0.1 = 0.1 cm.
10 mm
10 mm × 0.1 = 1 cm.
100 mm
100 mm × 0.1 = 10 cm.
Millimeters compared with Centimeters
One cm is 10 times as large as one mm, so your number gets smaller when you convert millimeters to centimeters and bigger when you convert back. If the answer is not smaller than what you typed, you multiplied instead of dividing.
About millimeters and centimeters
Millimeter (mm): One thousandth of a metre. Centimeter (cm): One hundredth of a metre.
How to calculate Millimeters to Centimeters step by step
- Enter the value in mm (the starting unit).
- Multiply by 0.1, because 1 mm = 0.1 cm.
- The product is the value in cm. To go back, divide by 0.1 or multiply by 10.
Popular typography conversions
How to read your Millimeters to Centimeters result
Printing and design tools use points and picas, while web layouts use pixels.
| MILLIMETERS | CENTIMETERS |
|---|---|
| 1 | 0.1 |
| 2 | 0.2 |
| 5 | 0.5 |
| 10 | 1 |
| 20 | 2 |
| 50 | 5 |
| 100 | 10 |
| 1,000 | 100 |
Centimeters to Millimeters: quick table
| CENTIMETERS | MILLIMETERS |
|---|---|
| 1 | 10 |
| 5 | 50 |
| 10 | 100 |
| 25 | 250 |
| 50 | 500 |
| 100 | 1,000 |
| 250 | 2,500 |
| 500 | 5,000 |
Common mistakes when calculating Millimeters to Centimeters
- Mixing the CSS point (1/72 in) with older printer point definitions.
- Dividing when you should multiply: from mm to cm multiply by 0.1; from cm to mm divide by 0.1.
Millimeters to Centimeters FAQ
How many cm are in 1 mm?
1 mm equals 0.1 cm.
How many mm are in 1 cm?
1 cm equals 10 mm.
Is 1 mm = 0.1 cm an exact conversion?
The factor is shown rounded to 7 significant figures (0.1). The calculator above uses more digits.
What is a centimeter (cm)?
One hundredth of a metre.
How can I estimate millimeters to centimeters in my head?
One cm is 10 times as large as one mm, so your number gets smaller when you convert millimeters to centimeters and bigger when you convert back. If the answer is not smaller than what you typed, you multiplied instead of dividing.
What is 40 mm in centimeters?
40 mm = 4 cm (since 40 × 0.1).
What is 200 mm in centimeters?
200 mm = 20 cm (since 200 × 0.1).
What is 3 mm in centimeters?
3 mm = 0.3 cm (since 3 × 0.1).
How many decimals should I keep when converting mm to cm?
Match the precision of your original measurement. For example, 1 cm rounds to 1 cm at 3 significant figures; keep more digits only for engineering or scientific work.
More in Typography converters
- Millimeters to Pixels Converter
- Inches to Picas Converter
- Millimeters to Points Converter
- Inches to Millimeters Converter
- Picas to Centimeters Converter
- Inches to Centimeters Converter
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Method, review and disclaimer
Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: W3C CSS Values and Units: absolute lengths (1in = 96px = 72pt = 6pc)