Convert Square centimeters to square inches
1 square centimeter = 0.155 square inches · in² = cm² ÷ 6.4516
When you need this conversion
This conversion goes from square centimeters, used for small surface areas and material samples, to square inches, used for small US area measurements. 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 inches conversion table
| Square centimeters (cm²) | Square inches (in²) |
|---|---|
| 1 cm² | 0.155 in² |
| 2 cm² | 0.310001 in² |
| 3 cm² | 0.465001 in² |
| 5 cm² | 0.775002 in² |
| 10 cm² | 1.55 in² |
| 15 cm² | 2.325 in² |
| 20 cm² | 3.1 in² |
| 25 cm² | 3.875 in² |
| 50 cm² | 7.75 in² |
| 75 cm² | 11.625 in² |
| 100 cm² | 15.5 in² |
| 250 cm² | 38.7501 in² |
| 500 cm² | 77.5002 in² |
| 1,000 cm² | 155 in² |
The formula
in² = cm² ÷ 6.4516Because 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 inches to square centimeters →Related area conversions
- Square meters to square feet
- Square feet to square meters
- Acres to hectares
- Hectares to acres
- Square millimeters to square inches
- Square centimeters to square millimeters
- Square centimeters to square meters
- Square centimeters to square kilometers
- Square centimeters to square feet
- Square centimeters to square yards
- Square centimeters to square miles
- Square centimeters to acres
Frequently asked questions
- How many square inches are in a square centimeter?
- There are 0.155 square inches in 1 square centimeter. The formula is in² = cm² ÷ 6.4516.
- How do you convert square centimeters to square inches?
- Use the formula in² = cm² ÷ 6.4516. For example, 10 square centimeters equals 1.55 square inches.
- Is the square centimeters to square inches conversion exact?
- Yes. Square centimeters and square inches 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. in² is the symbol for square inch.