How to Convert Millimeters to Centimeters
Master the simple mm to cm conversion with examples for engineering, crafts, and everyday measurements.
Last updated: 2026-03-15
The Millimeters to Centimeters Formula
Centimeters = Millimeters ÷ 10
This is an exact conversion within the metric system. The prefix "milli" means one-thousandth and "centi" means one-hundredth of a meter. Since 1 cm = 10 mm, you simply move the decimal point one place to the left.
Step-by-Step Examples
Example 1: A 35 mm Camera Sensor
- Calculation: 35 ÷ 10 = 3.5 cm.
- Result: A 35 mm full-frame sensor diagonal is 3.5 cm.
Example 2: A 250 mm Shelf Board Width
- Calculation: 250 ÷ 10 = 25 cm.
- Result: 250 mm = 25 cm wide.
Example 3: Rainfall of 12.7 mm
- Calculation: 12.7 ÷ 10 = 1.27 cm.
- Result: 12.7 mm of rain = 1.27 cm.
Reference Table
| Millimeters | Centimeters | Inches |
|---|---|---|
| 1 | 0.1 | 0.039 |
| 5 | 0.5 | 0.197 |
| 10 | 1.0 | 0.394 |
| 25 | 2.5 | 0.984 |
| 50 | 5.0 | 1.969 |
| 100 | 10.0 | 3.937 |
| 250 | 25.0 | 9.843 |
| 500 | 50.0 | 19.685 |
| 1,000 | 100.0 | 39.370 |
Real-World Applications
Engineering and Manufacturing
Technical drawings use millimeters as the standard unit of measurement. When communicating dimensions to non-technical stakeholders, converting to centimeters can make sizes more intuitive.
3D Printing
3D printer settings (layer height, nozzle diameter) use millimeters (typically 0.1-0.3 mm layer height). Model dimensions might be discussed in centimeters for larger objects.
Weather Reports
Precipitation is measured in millimeters worldwide. Converting to centimeters helps visualize accumulation: 50 mm of rain means 5 cm of water depth on a flat surface.
Metric Length Hierarchy
Remember the metric length units from smallest to largest:
- 1 mm = 0.1 cm = 0.001 m
- 10 mm = 1 cm = 0.01 m
- 1,000 mm = 100 cm = 1 m
- 1,000,000 mm = 100,000 cm = 1 km
Use our length converter for conversions between any length units.