Square Centimetres to Square Inches
Convert square centimetres (cm²) to square inches (in²) instantly — with formula and reference table.
Quick answer: 1 cm² = 0.155 in². To convert square centimetres to square inches, multiply by cm² × 0.155.
Converting square centimetres to square inches
This converter changes a value in square centimetres (cm²) into square inches (in²). One square centimetre equals 0.155 in². One square inch equals 6.4516 square centimetres, so converting square centimetres to square inches means dividing by 6.4516. The conversion runs entirely in your browser — enter a value and the result updates instantly, in either direction.
Formula
in² = cm² × 0.155
Example
Convert 10 cm² to in²: 10 × 0.155 = 1.550003 in².
Square Centimetres to Square Inches conversion table
| Square Centimetres (cm²) | Square Inches (in²) |
|---|---|
| 1 cm² | 0.155 in² |
| 2 cm² | 0.310001 in² |
| 3 cm² | 0.465001 in² |
| 5 cm² | 0.775002 in² |
| 10 cm² | 1.550003 in² |
| 20 cm² | 3.100006 in² |
| 25 cm² | 3.875008 in² |
| 50 cm² | 7.750016 in² |
| 100 cm² | 15.500031 in² |
How to use this converter
- Enter a value in the square centimetres (cm²) field.
- Read the converted value in square inches (in²) below.
- Type into the in² field instead to convert in reverse, or use the swap button.
Frequently asked questions
How many square inches are in a square centimetre?
1 square centimetre equals 0.155 square inches.
How do I convert 100 sq cm to sq in?
100 times 0.155 = 15.5 square inches.
How many square cm in a square inch?
There are 6.4516 square centimetres in a square inch.