Convert Square Inch to Square Centimeter
Convert square inches to square centimeters by entering a value below.
How to Convert Square Inches to Square Centimeters
The square inch and square centimeter are both units of area. 1 square inch equals 6.4516 square centimeters. This means to convert square inches to square centimeters, you multiply by 6.4516.
Formula
Step-by-Step Example
Convert 5 in² to square centimeters:
We need to convert square inches to square centimeters
Since 1 in² = 6.4516 cm², multiply by 6.4516
5 × 6.4516 = 32.258
5 in² = 32.258 cm²
Square Inch to Square Centimeter Conversion Table
Quick reference table for common square inch to square centimeter conversions. Click any value for detailed calculation.
| Square Inches (in²) | Square Centimeters (cm²) |
|---|---|
| 1 in² | 6.4516 cm² |
| 2 in² | 12.9032 cm² |
| 5 in² | 32.258 cm² |
| 10 in² | 64.516 cm² |
| 15 in² | 96.774 cm² |
| 20 in² | 129.032 cm² |
| 25 in² | 161.29 cm² |
| 50 in² | 322.58 cm² |
| 100 in² | 645.16 cm² |
About These Units
Square Inch (in²)
A square inch (in² or sq in) equals 6.4516 square centimeters or 645.16 square millimeters. Square inches measure small surfaces, screen sizes, and component dimensions. Monitor/TV screens are measured diagonally, but area is calculated in square inches.
Square Centimeter (cm²)
A square centimeter (cm²) equals 0.155 square inches or 100 square millimeters. Square centimeters measure small surfaces, skin lesions, paper sizes, and cross-sectional areas. A postage stamp is about 4-6 cm². Commonly used in medical and scientific measurements.
Frequently Asked Questions
How do I convert square inches to square centimeters?
To convert square inches to square centimeters, multiply the value by 6.4516. For example, 10 in² = 64.516 cm².
How many square centimeters are in 1 square inch?
1 square inch equals 6.4516 square centimeters.
What is the formula for square inches to square centimeters?
The formula is: cm² = in² × 6.4516.