Table Of Contents
Square centimeter to square inches Conversion
1 square centimeter (cm²) is equal to 0.15500031 square inches (in²).
1 cm² = 0.15500031 in²
or
1 in² = 6.4516 cm²
Formula
To convert a area from square centimeter (cm²) to square inches (in²), divide the area in square centimeter by 6.4516
a(in²) = a(cm²) / 6.4516
Examples:
Convert 1 square centimeter to square inches:
a(in²) = 1cm² / 6.4516 = 0.15500031 in²
Conversion table
| Square centimeter (cm²) | Square inches (in²) |
|---|---|
| 1 cm² | 0.15500031 in² |
| 2 cm² | 0.31000062 in² |
| 3 cm² | 0.46500093 in² |
| 5 cm² | 0.77500155 in² |
| 10 cm² | 1.5500031 in² |
| 20 cm² | 3.1000062 in² |
| 25 cm² | 3.87500775 in² |
| 50 cm² | 7.7500155 in² |
| 100 cm² | 15.500031 in² |
| 250 cm² | 38.7500775 in² |
| 500 cm² | 77.500155 in² |
| 1000 cm² | 155.000310001 in² |
| Square inches (in²) | Square centimeter (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 |
| 25 in² | 161.29 cm² |
| 50 in² | 322.58 cm² |
| 100 in² | 645.16 cm² |
| 250 in² | 1612.9 cm² |
| 500 in² | 3225.8 cm² |
| 1000 in² | 6451.6 cm² |
Frequently asked questions
How do I convert square centimeter to square inches?
Divide the value in square centimeter by 6.4516 to get the result in square inches. For example, 5 cm² ÷ 6.4516 = 0.77500155 in².
How many square inches are in 1 square centimeter?
1 square centimeter (cm²) is equal to 0.15500031 square inches (in²).
How do I convert square inches back to square centimeter?
Use the inverse operation: multiply the value in square inches by 6.4516 to get the result in square centimeter.
How accurate is the square centimeter to square inches conversion?
The converter multiplies by the conversion factor 6.4516 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.
Sources
Conversion factors are based on internationally recognised standards:
- BIPM — The International System of Units (SI Brochure, 9th edition)
- NIST Handbook 44, Appendix C — General Tables of Units of Measurement (current edition)
- U.S. Survey Foot: Revised Unit Conversion Factors
- NIST Guide to the SI (SP 811), Appendix B.9: Factors for units listed by kind of quantity or field of science
