Square Centimetre to Square Inch
Free instant square centimetre to square inch converter. 1 cm² = 0.155 in².
Common Square Centimetre to Square Inch values
| Square Centimetre (cm²) | Square Inch (in²) |
|---|---|
| 1 | 0.155 |
| 5 | 0.775002 |
| 10 | 1.55 |
| 25 | 3.87501 |
| 50 | 7.75002 |
| 100 | 15.5 |
| 500 | 77.5002 |
| 1000 | 155 |
How does Square Centimetre to Square Inch conversion work?
Type a value in the Square Centimetre (cm²) field and the equivalent in Square Inch (in²) appears instantly to the right. The math uses the exact formula shown above — no rounding errors, no approximations beyond standard floating-point precision. Use the swap button to flip the units and see the inverse conversion.
Square Centimetre. One ten-thousandth of a square metre. Common for small surface areas.
Square Inch. About 6.45 square centimetres. Used for screen sizes and small surface areas.
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🎯 Accurate conversions
Conversion factors come from the official standard (NIST, BIPM, ISO definitions where applicable). Values are precise to standard floating-point limits.
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