Length Converter
Convert metric, imperial, navigation, and scientific length units with live results, accurate formulas, and reference tables.
Length conversion
Calculator
Results update instantly. Use Calculate to confirm the current conversion.
Result
1 cm ≈ 10 mm
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Popular length conversions
Open a focused converter for a commonly searched length conversion.
Conversion table
Common centimeters to millimeters values, generated from the selected units.
| centimeters (cm) | millimeters (mm) |
|---|---|
| 1 centimeter | 10 millimeters |
| 5 centimeters | 50 millimeters |
| 10 centimeters | 100 millimeters |
| 20 centimeters | 200 millimeters |
| 50 centimeters | 500 millimeters |
| 100 centimeters | 1,000 millimeters |
Formula
Multiply the value in centimeters by 10 to get millimeters.
mm = cm × 10Example
Convert 1 centimeter:
1 cm ≈ 10 mm1 centimeter is approximately 10 millimeters.
Unit information
Concise reference information for the selected source and target units.
Centimeter (cm)
Metric- Definition
- One centimeter is one-hundredth of a meter.
- Usage
- Common for body measurements, household objects, maps, and schoolwork.
Millimeter (mm)
Metric- Definition
- One millimeter is one-thousandth of a meter.
- Usage
- Used for precise dimensions, manufacturing, medicine, and rainfall.
Frequently asked questions
Which length units does this converter support?
The converter supports 14 units: millimeters, centimeters, meters, kilometers, inches, feet, yards, miles, nautical miles, micrometers, nanometers, light years, astronomical units, and parsecs.
How does the length converter calculate results?
Each value is converted to meters as a shared base unit, then converted from meters to the selected target unit.
Can the converter handle decimals, negative values, and zero?
Yes. The input accepts integers, decimals, negative values, and zero, and updates the result immediately.