Square centimeters (cm²) to Square inches (in²) Conversion
Square centimeters
The square centimetre is a unit of area equal to one ten-thousandth of a square metre (10⁻⁴ m²). It is commonly used in medicine for measuring wound areas, skin lesions, and body surface area calculations. In materials science, properties such as electrical conductivity and thermal resistance are sometimes expressed per square centimetre. Cross-sectional areas of cables and pipes in engineering are often specified in square centimetres.
Square inches
The square inch is a unit of area equal to exactly 6.4516 cm² (the square of 2.54 cm). It is used in engineering for specifying material cross-sections, pressure calculations (pounds per square inch = psi), and the dimensions of small components. Tile and flooring materials in the United States are sometimes measured in square inches for small-format tiles.
| Square centimeters (cm²) | Square inches (in²) |
|---|---|
| 0.1 cm² | 0.0155 in² |
| 1 cm² | 0.155 in² |
| 2 cm² | 0.31 in² |
| 3 cm² | 0.465 in² |
| 5 cm² | 0.775 in² |
| 10 cm² | 1.55 in² |
| 20 cm² | 3.10 in² |
| 30 cm² | 4.65 in² |
| 50 cm² | 7.75 in² |
| 100 cm² | 15.50 in² |
| 1000 cm² | 155.0003 in² |
Frequently Asked Questions (FAQ)
How many square inches are in 1 square centimeters?
1 square centimeters (cm²) is exactly 0.155 square inches (in²).
How do I convert square centimeters to square inches?
Multiply the value in square centimeters by 0.155 to get the result in square inches. Or use the converter above — type any number and see the result instantly.