Convert Square centimeters to square millimeters
1 square centimeter = 100 square millimeters · mm² = cm² × 100
When you need this conversion
This conversion goes from square centimeters, used for small surface areas and material samples, to square millimeters, used for wire gauge and small cross-sections. Both measure the same physical quantity, so the conversion is exact — the difference is which unit your source, tool, or region happens to use.
Square centimeters to square millimeters conversion table
| Square centimeters (cm²) | Square millimeters (mm²) |
|---|---|
| 1 cm² | 100 mm² |
| 2 cm² | 200 mm² |
| 3 cm² | 300 mm² |
| 5 cm² | 500 mm² |
| 10 cm² | 1,000 mm² |
| 15 cm² | 1,500 mm² |
| 20 cm² | 2,000 mm² |
| 25 cm² | 2,500 mm² |
| 50 cm² | 5,000 mm² |
| 75 cm² | 7,500 mm² |
| 100 cm² | 10,000 mm² |
| 250 cm² | 25,000 mm² |
| 500 cm² | 50,000 mm² |
| 1,000 cm² | 100,000 mm² |
The formula
mm² = cm² × 100Because both units measure area, the conversion is a single multiplication by a fixed factor. That factor never changes, so the result is exact.
Convert the other way
Square millimeters to square centimeters →Related area conversions
- Square meters to square feet
- Square feet to square meters
- Acres to hectares
- Hectares to acres
- Square centimeters to square meters
- Square centimeters to square kilometers
- Square centimeters to square inches
- Square centimeters to square feet
- Square centimeters to square yards
- Square centimeters to square miles
- Square centimeters to acres
- Square centimeters to hectares
Frequently asked questions
- How many square millimeters are in a square centimeter?
- There are 100 square millimeters in 1 square centimeter. The formula is mm² = cm² × 100.
- How do you convert square centimeters to square millimeters?
- Use the formula mm² = cm² × 100. For example, 10 square centimeters equals 1,000 square millimeters.
- Is the square centimeters to square millimeters conversion exact?
- Yes. Square centimeters and square millimeters are both units of area, related by an exact defined factor. Displayed results are rounded for readability.
- What is cm² short for?
- cm² is the standard symbol for square centimeter. mm² is the symbol for square millimeter.