in² to cm²
39 unitsResult6.451600e+0
6.4516cm²
1 in² × 6.4516 = 6.4516 cm²
Convert Square inch to Square centimeter (in² to cm²)
1 square inch = 6.4516 square centimeters. Convert square inch to square centimeters instantly, with the exact factor, the formula and a reference table of common values.
Formula
square centimeters = square inch × 6.4516
in² to cm² conversion table
| in² | cm² |
|---|---|
| 1 in² | 6.4516 cm² |
| 2 in² | 12.9032 cm² |
| 3 in² | 19.3548 cm² |
| 5 in² | 32.258 cm² |
| 10 in² | 64.516 cm² |
| 20 in² | 129.032 cm² |
| 50 in² | 322.58 cm² |
| 100 in² | 645.16 cm² |
| 250 in² | 1612.9 cm² |
| 500 in² | 3225.8 cm² |
| 1000 in² | 6451.6 cm² |
What is a square inch?
A square inch is a square one inch on each side, just 0.00064516 square meters — about the size of a large postage stamp.
It is used for small surfaces in engineering and printing, and in the US for pressure figures like pounds per square inch.
In writing, the square inch is usually shortened to "in²". One square inch is 0.00064516 square meters, and that ratio is what every number on this page is built from.