How to convert square inches to square centimeters
To convert square inches (in²) to square centimeters (cm²), multiply the value in square inches by 6.4516.
cm² = in² × 6.4516
Example: 10 in² = 64.516 cm².
You can also type 10 in² to cm² into the smart calculator, or mix units: 1 in² + 1 cm².
Square Inches to Square Centimeters conversion table
| Square Inches | Square Centimeters |
|---|---|
| 0.01 in² | 0.064516 cm² |
| 0.1 in² | 0.64516 cm² |
| 0.25 in² | 1.6129 cm² |
| 0.5 in² | 3.2258 cm² |
| 1 in² | 6.4516 cm² |
| 2 in² | 12.9032 cm² |
| 3 in² | 19.3548 cm² |
| 4 in² | 25.8064 cm² |
| 5 in² | 32.258 cm² |
| 6 in² | 38.7096 cm² |
| 7 in² | 45.1612 cm² |
| 8 in² | 51.6128 cm² |
| 9 in² | 58.0644 cm² |
| 10 in² | 64.516 cm² |
| 12 in² | 77.4192 cm² |
| 15 in² | 96.774 cm² |
| 20 in² | 129.032 cm² |
| 25 in² | 161.29 cm² |
| 30 in² | 193.548 cm² |
| 40 in² | 258.064 cm² |
| 50 in² | 322.58 cm² |
| 60 in² | 387.096 cm² |
| 75 in² | 483.87 cm² |
| 100 in² | 645.16 cm² |
| 250 in² | 1,612.9 cm² |
| 500 in² | 3,225.8 cm² |
| 1,000 in² | 6,451.6 cm² |
Converting square centimeters back to square inches
1 cm² = 0.15500031 in². See the Square Centimeters to Square Inches converter, or press the swap button above.
About the units
Square inch (in²)
A unit of area.
Square centimeter (cm²)
A unit of area.
Area measures a two-dimensional surface. The SI unit is the square meter. Property is often measured in square feet, while land uses acres or hectares: one hectare is 10,000 square meters, about 2.471 acres.
Questions and answers
How many square centimeters are in a square inch?
One square inch (in²) equals 6.4516 square centimeters (cm²).
How do I convert square inches to square centimeters?
To convert square inches to square centimeters, multiply the value in square inches by 6.4516. The formula is cm² = in² × 6.4516. For example, 10 in² = 64.516 cm².
What is 10 in² in cm²?
10 square inches is 64.516 square centimeters.
Which is bigger, a square inch or a square centimeter?
A square inch is bigger: 1 in² = 6.4516 cm².
How big is an acre?
An acre is exactly 43,560 square feet, about 4,047 square meters or 0.405 hectares. A hectare is about 2.471 acres.
Does this in² to cm² converter work offline?
Yes. ConvertEasy is a progressive web app: after your first visit it keeps working with no connection, and you can install it to your home screen from the browser menu.