Centimeters to Millimeters Converter
Convert centimeters to millimeters (mm). Multiply by 10—1 cm = 10 mm exactly. For rulers, engineering, and metric homework.
How to Convert Centimeter to Millimeter
Multiply centimeters by 10 (1 cm = 10 mm).
Conversion Formula:
value * 10.0000000000Conversion Examples
Example: 5 cm to mm
- 5 × 10 = 50 mm
50 mm
Exact factor.
Example: 12 cm to mm
- 12 × 10 = 120 mm
120 mm
Ruler length.
Conversion Chart
| Centimeter | Millimeter |
|---|---|
| 0.1 | 1 |
| 0.5 | 5 |
| 1 | 10 |
| 2.5 | 25 |
| 5 | 50 |
| 10 | 100 |
| 25 | 250 |
| 50 | 500 |
| 100 | 1000 |
| 250 | 2500 |
| 500 | 5000 |
| 1000 | 10000 |
Conversion Formula
Multiply centimeters by **10** for millimeters.
Quick Conversion Tip
cm × 10 = mm. Example: 5 cm = 50 mm.
Unit Definitions
Centimeter (cm)
A centimeter is a metric unit of length equal to one-hundredth of a meter (1/100 m). It is a practical unit for everyday measurements and is commonly used in science, engineering, and daily life.
1 centimeter = 10 millimeters = 0.01 meters = 0.00001 kilometers = 0.393701 inches
Millimeter (mm)
A millimeter is a metric unit of length equal to one-thousandth of a meter (1/1000 m). It is the smallest common metric unit for length measurements and is widely used in engineering, manufacturing, and precision measurements.
1 millimeter = 0.1 centimeters = 0.001 meters = 0.000001 kilometers = 0.0393701 inches
Common Use Cases
- Rulers and craft measurements.
- Engineering tolerances.
- Science lab dimensions.
- Metric prefix homework.
Understanding the Conversion
1 cm = 10 mm (exact). Multiply cm by 10.
Examples: 5 cm = 50 mm; 12 cm = 120 mm. Everyday metric length step.
Divide mm by 10 for cm.
Rulers and craft measurements. The table and FAQ on this page walk through the factor if you need it.
FAQs
How many mm in one centimeter?
Exactly 10 millimeters.
How do I convert cm to mm?
Multiply centimeters by 10.
What is 25 cm in mm?
25 × 10 = 250 mm.