Millimeters to Centimeters
Convert millimeters to centimeters instantly, with a reference table.
Millimeters to Centimeters at a glance
Millimeters to Centimeters is a free online converter you can use right now to convert millimeters to centimeters instantly, with a reference table โ no account, no install and no usage limit. It runs entirely inside your browser, so whatever you enter stays on your own device.
- Price
- Free โ no trial, no paid tier, no watermark
- Sign-up
- Not required
- Where it runs
- In your browser โ nothing is uploaded to a server
- Works on
- Chrome, Safari, Firefox and Edge โ desktop, tablet and phone
- Category
- Unit Conversions
Millimeters to Centimeters conversion table
| Millimeters (mm) | Centimeters (cm) |
|---|---|
| 1 mm | 0.1 cm |
| 2 mm | 0.2 cm |
| 3 mm | 0.3 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 |
About Millimeters to Centimeters
Convert millimeters to centimeters instantly, with a reference table of common values. The factor is exact: 1 mm = 0.1 cm.
A decimal shift used when a fine engineering measurement in millimetres needs to be expressed at the coarser scale people use conversationally.
The millimetre is one thousandth of a metre. It is the smallest unit most people encounter on an ordinary ruler, and the finest division that is comfortably readable by eye. It is the working unit of engineering drawings, machining and construction, where specifying in centimetres would introduce ambiguous decimal places. Technical drawings almost universally use millimetres without stating the unit. A credit card is 0.76 mm thick and a standard pencil lead is 0.7 mm across.
Worked through with real numbers: 1 mm is 0.1 cm, 10 mm is 1 cm, 100 mm is 10 cm.
As for the other side of the conversion: A credit card is 8.56 cm wide, and an adult of 5 feet 9 inches is about 175 cm tall.
Length conversions between metric and imperial are exact by definition rather than approximate. The 1959 international yard and pound agreement fixed the inch at precisely 2.54 cm and the yard at 0.9144 m, so these factors are definitions and carry no measurement error.
How to use Millimeters to Centimeters
- Enter the number of millimeters you want to convert.
- The equivalent in centimeters appears instantly โ there is no button to press.
- Check the reference table for common Millimeters to Centimeters values.
Frequently asked questions
How do I convert millimeters to centimeters?
Multiply your millimeters figure by 0.1 to get centimeters โ or type a value above and read the answer straight off.
How many centimeters are in one millimeter?
1 mm = 0.1 cm.
When would I need to convert millimeters to centimeters?
A decimal shift used when a fine engineering measurement in millimetres needs to be expressed at the coarser scale people use conversationally.
What is a millimeter, exactly?
The millimetre is one thousandth of a metre. It is the smallest unit most people encounter on an ordinary ruler, and the finest division that is comfortably readable by eye. A credit card is 0.76 mm thick and a standard pencil lead is 0.7 mm across.
Where is the centimeter actually used?
It is the everyday metric unit for anything hand-sized: body measurements, clothing sizes, paper and furniture dimensions across most of the world. A credit card is 8.56 cm wide, and an adult of 5 feet 9 inches is about 175 cm tall.
Is there anything tricky about length conversions?
Length conversions between metric and imperial are exact by definition rather than approximate. The 1959 international yard and pound agreement fixed the inch at precisely 2.54 cm and the yard at 0.9144 m, so these factors are definitions and carry no measurement error.
Is this converter accurate?
Yes. It uses the exact standard factor of 1 mm = 0.1 cm, and the conversion runs in your browser so nothing is uploaded.