Square Millimeter to Square Centimeter (mm² to cm²)
Convert mm² to cm² — Area converter
Also written as mm2 to cm2.
One square millimeter equals 0.01 cm², so to convert square millimeters to square centimeters you multiply the value by 0.01. A square millimeter is smaller than a square centimeter — going the other way, 1 cm² = 100 mm². For example, 10 mm² = 0.1 cm² and 50 mm² = 0.5 cm².
1 mm² = 0.01 cm²
Square Millimeter to Square Centimeter formula
1 Square Millimeter = 0.01 cm²
Worked examples
- 25 mm² = 0.25 cm²
- 100 mm² = 1 cm²
Square Millimeter to Square Centimeter conversion table
| Square Millimeter (mm²) | Square Centimeter (cm²) |
|---|---|
| 1 | 0.01 |
| 2 | 0.02 |
| 3 | 0.03 |
| 5 | 0.05 |
| 8 | 0.08 |
| 10 | 0.1 |
| 12 | 0.12 |
| 15 | 0.15 |
| 20 | 0.2 |
| 25 | 0.25 |
| 50 | 0.5 |
| 100 | 1 |
| 250 | 2.5 |
| 500 | 5 |
| 1000 | 10 |
Frequently asked questions
How many square centimeters are in one square millimeter?
One square millimeter equals 0.01 square centimeters (cm²).
How many square millimeters are in one square centimeter?
One square centimeter equals 100 square millimeters (mm²).
How do you convert square millimeters to square centimeters?
1 Square Millimeter = 0.01 cm². Use the calculator above for any value.
What is 5 mm² in cm²?
5 mm² = 0.05 cm².
What is 100 mm² in cm²?
100 mm² = 1 cm².
What is 10 mm² in cm²?
10 mm² = 0.1 cm².
What is 20 mm² in cm²?
20 mm² = 0.2 cm².
Is a square millimeter bigger than a square centimeter?
No. A square millimeter is smaller — one square millimeter equals 0.01 square centimeters, while one square centimeter equals 100 square millimeters.