Square inches (in²) to Square centimeters (cm²) Conversion
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
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 (in²) | Square centimeters (cm²) |
|---|---|
| 0.1 in² | 0.6452 cm² |
| 1 in² | 6.4516 cm² |
| 2 in² | 12.9032 cm² |
| 3 in² | 19.3548 cm² |
| 5 in² | 32.258 cm² |
| 10 in² | 64.516 cm² |
| 20 in² | 129.032 cm² |
| 30 in² | 193.548 cm² |
| 50 in² | 322.58 cm² |
| 100 in² | 645.16 cm² |
| 1000 in² | 6,451.60 cm² |
Frequently Asked Questions (FAQ)
How many square centimeters are in 1 square inches?
1 square inches (in²) is exactly 6.4516 square centimeters (cm²).
How do I convert square inches to square centimeters?
Multiply the value in square inches by 6.4516 to get the result in square centimeters. Or use the converter above — type any number and see the result instantly.