Square Inches - Square Centimeters Converter


Convert between square inches (in²) and square centimeters (cm²). This converter is part of the full area converter tool. Simply choose which unit you want to convert from and to, enter a value and click the 'convert' button. A reference chart can be found further down the page.

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Converting square centimeters and square inches

Some commonly asked questions are included below, as well as a reference chart. When making manual conversions, you can use the converter at the top of this page to check your answer.

How many square inches are there in 1 square centimeter?

There are 0.15500031000062 square inches in 1 square centimeter. To convert from square centimeters to square inches, multiply your figure by 0.15500031000062 (or divide by 6.4516) .

How many square centimeters are there in 1 square inch?

There are 6.4516 square centimeters in 1 square inch. To convert from square inches to square centimeters, multiply your figure by 6.4516 (or divide by 0.15500031000062) .

In the chart below, figures are rounded to a maximum of 3 decimal places (6 with smaller numbers) to give approximations.

Square Centimeters and square inches reference chart

Square Centimeters Square Inches Square Inches Square Centimeters
0.1 0.016 in² 0.1 0.645 cm²
1 0.155 in² 1 6.452 cm²
2 0.31 in² 2 12.903 cm²
3 0.465 in² 3 19.355 cm²
4 0.62 in² 4 25.806 cm²
5 0.775 in² 5 32.258 cm²
6 0.93 in² 6 38.71 cm²
7 1.085 in² 7 45.161 cm²
8 1.24 in² 8 51.613 cm²
9 1.395 in² 9 58.064 cm²
10 1.55 in² 10 64.516 cm²
20 3.1 in² 20 129.032 cm²
30 4.65 in² 30 193.548 cm²
40 6.2 in² 40 258.064 cm²
50 7.75 in² 50 322.58 cm²
60 9.3 in² 60 387.096 cm²
70 10.85 in² 70 451.612 cm²
80 12.4 in² 80 516.128 cm²
90 13.95 in² 90 580.644 cm²
100 15.5 in² 100 645.16 cm²

What is a square centimeter?

Square centimeters (or 'square centimetres' with British spelling) are commonly used to measure areas in both the commercial and domestic environment. Some examples could be the size of a 12-inch computer screen (77.41 square centimetres) or the size of a microchip. One square centimeter can be translated as 0.15 inches. In mapping, square centimeters are often translated into acres or hectares. This has applications within the surveying industry.

What is a square inch?

A square inch is a common unit of measurement within the United States and the United Kingdom. It can be used throughout numerous industries such as construction, graphic design, textiles and painting. Some common abbreviations include sq. in., sq. inches and in/-2. One square inch can approximate the size of many postage stamps. A single square inch is equal to 6.45 square centimeters.

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