Square inches to square centimetres – convert in² to cm²
Convert square inches to square centimetres (in² to cm²) to translate imperial area measurements into metric values. Useful for DIY projects, product dimensions, screen sizes, packaging and technical drawings.
Open the interactive in² → cm² converter:
Use main converter (in² → cm²) or switch to cm² → in²The area converter on the homepage also handles m², ft², yd², acres, hectares and more.
Quick reference: in² to cm²
One square inch is exactly 6.4516 cm², so: cm² = in² × 6.4516. Some examples:
| Square inches (in²) | Square centimetres (cm², approx.) |
|---|---|
| 1 in² | 6.45 cm² |
| 5 in² | 32.26 cm² |
| 10 in² | 64.52 cm² |
| 25 in² | 161.29 cm² |
| 50 in² | 322.58 cm² |
| 100 in² | 645.16 cm² |
| 200 in² | 1,290.32 cm² |
Why convert square inches to square centimetres?
In² to cm² is handy when you:
- Convert imperial product specs into metric sizes for comparison.
- Work with woodworking, craft or 3D-print designs measured in inches.
- Translate screen or label areas into SI units for documentation.
- Teach how area units change when you square a length conversion.
Other area converters on this site
All area conversions on the homepage are built from exact length factors (in ↔ cm ↔ m), so squared units stay consistent and accurate.
Page last updated: 4 December 2025.