Square Inches to Square Centimeters Converter
Convert square inches (sq in) to square centimeters (cm²), with the formula, a conversion table and exact factors.
Change the values and press Calculate to work out your own figures.
Enter an area, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.
Show the working
- 1 sq in = 6.4516 cm²
- 1 × 6.4516 = 6.4516 cm²
How to convert square inches to square centimeters
1 sq in = 6.4516 cm², so multiply by 6.4516 to go from square inches to square centimeters. Going the other way, 1 cm² = 0.155000310001 sq in.
cm² = sq in × 6.4516 sq in = cm² × 0.155000310001
Worked example:
1 sq in = 6.4516 cm² 5 × 6.4516 = 32.258 cm²
Square Inches to square centimeters table
| Square Inches | Square Centimeters |
|---|---|
| 1 sq in | 6.4516 cm² |
| 2 sq in | 12.9032 cm² |
| 3 sq in | 19.3548 cm² |
| 4 sq in | 25.8064 cm² |
| 5 sq in | 32.258 cm² |
| 6 sq in | 38.7096 cm² |
| 7 sq in | 45.1612 cm² |
| 8 sq in | 51.6128 cm² |
| 9 sq in | 58.0644 cm² |
| 10 sq in | 64.516 cm² |
| 15 sq in | 96.774 cm² |
| 20 sq in | 129.032 cm² |
| 25 sq in | 161.29 cm² |
| 30 sq in | 193.548 cm² |
| 40 sq in | 258.064 cm² |
| 50 sq in | 322.58 cm² |
| 75 sq in | 483.87 cm² |
| 100 sq in | 645.16 cm² |
| 250 sq in | 1,612.9 cm² |
| 500 sq in | 3,225.8 cm² |
| 1000 sq in | 6,451.6 cm² |
About the units
- Square Inches (sq in)
- Square inches, a US customary unit. Definition: NIST Handbook 44 Appendix C (derived from the international inch).
- Square Centimeters (cm²)
- Square centimeters, a metric unit. Definition: BIPM SI Brochure (SI prefixes).
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