Convert Square Inches to Square Centimeters

1 in² = 6.4516 cm²

1 in² = 6.4516 cm²

square inches (in²) square centimeters (cm²)
0.5 3.2258
1 6.4516
2 12.9032
5 32.258
10 64.516
25 161.29
50 322.58
100 645.16
250 1612.9
500 3225.8
1000 6451.6

To convert square inches to square centimeters, multiply the value by the conversion factor:

1 in² = 6.4516 cm²

For example: 10 in² = 64.516 cm²

The Conversion Formula

To convert square inches to square centimeters, multiply the value by the conversion factor: 1 in² = 6.4516 cm². For a worked example, suppose you need to convert 25 in² to square centimeters: 25 × 6.4516 = 161.29 cm². To convert in the opposite direction, divide by 6.4516, or equivalently multiply by 0.155.

About square inches

The square inch is the smallest common imperial area unit. It is primarily used in engineering and manufacturing in the US. It also forms the basis for the pressure unit 'psi' (pounds per square inch). In the digital age, it appears in calculations for screen pixel density (pixels per inch) and print resolution. square inches are commonly used in Pistons and engine cylinders, Pressure calculations, Small art prints, and Electronic displays, Stamp collecting (US).

A standard post-it note is 9 square inches.

About square centimeters

The square centimeter (cm²) is a unit for small surfaces. It was the base area unit of the CGS system (centimeter-gram-second) used in early science. Today, it remains the practical choice for biology (leaf area), medicine (skin grafts), and electronics (chip sizes), where square meters are simply too big. square centimeters are commonly used in Medical skin patches, Smartphone screens, Postage stamps, and Paper sizes, Biology experiments.

A credit card covers about 46 square centimeters.

When Would You Convert square inches to square centimeters?

Converting between square inches and square centimeters is one of the most common area conversions. You might need this conversion when working with international specifications, following instructions written for a different measurement system, or comparing values across different standards. Having the conversion factor (1 in² = 6.4516 cm²) memorized or bookmarked can save time in professional and everyday contexts alike.