Area conversion
Square centimetre to Square inch
One square centimetre is 0.155 square inches. Enter any value below to convert it instantly, or use the reference table further down for the numbers you need most often.
Conversion rate
1 cm² = 0.155 in²
in² = cm² × 0.155
1 cm² = 0.155 in²
Reference
Square centimetre to Square inch table
The values people look up most often, rounded for practical use.
| Square centimetre (cm²) | Square inch (in²) | Written out |
|---|---|---|
| 1 cm² | 0.155 in² | 1 square centimetres = 0.155 square inches |
| 2 cm² | 0.31 in² | 2 square centimetres = 0.31 square inches |
| 3 cm² | 0.465 in² | 3 square centimetres = 0.465 square inches |
| 5 cm² | 0.775 in² | 5 square centimetres = 0.775 square inches |
| 10 cm² | 1.550003 in² | 10 square centimetres = 1.550003 square inches |
| 15 cm² | 2.325005 in² | 15 square centimetres = 2.325005 square inches |
| 20 cm² | 3.100006 in² | 20 square centimetres = 3.100006 square inches |
| 25 cm² | 3.875008 in² | 25 square centimetres = 3.875008 square inches |
| 50 cm² | 7.750016 in² | 50 square centimetres = 7.750016 square inches |
| 100 cm² | 15.50003 in² | 100 square centimetres = 15.50003 square inches |
| 250 cm² | 38.75008 in² | 250 square centimetres = 38.75008 square inches |
| 500 cm² | 77.50016 in² | 500 square centimetres = 77.50016 square inches |
| 1,000 cm² | 155 in² | 1,000 square centimetres = 155 square inches |
How to convert square centimetres to square inches
Multiply the number of square centimetres by 0.155. That is the whole calculation: in² = cm² × 0.155. To go back the other way, divide instead, or multiply by 6.4516.
Worked example: 12 square centimetres × 0.155 = 1.860004 square inches.
Where this conversion comes up
Area conversions appear in property listings, flooring, land and gardening. Remember that area factors are the square of the length factors — a foot is 0.3048 m, but a square foot is 0.0929 m², not 0.3048.
Quick answers
- 1 square centimetre = 0.155 square inches
- 2 square centimetres = 0.31 square inches
- 5 square centimetres = 0.775 square inches
- 10 square centimetres = 1.550003 square inches
- 100 square centimetres = 15.50003 square inches
More conversions
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Answers
Frequently asked questions
in² = cm² × 0.155. The converter above applies it for you, but the formula is useful in a spreadsheet — put your value in column A and the formula in column B.Related tools
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