Square Inches to Square Centimeters Converter

Enter the area in square inches below to get the value converted to square centimeters.

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Results in Square Centimeters:
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1 sq in = 6.4516 sq cm

Do you want to convert square centimeters to square inches?

How to Convert Square Inches to Square Centimeters

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Joe is the creator of Inch Calculator and has over 20 years of experience in engineering and construction. He holds several degrees and certifications.

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To convert a measurement in square inches to a measurement in square centimeters, multiply the area by the following conversion ratio: 6.4516 square centimeters/square inch.

Since one square inch is equal to 6.4516 square centimeters, you can use this simple formula to convert:

square centimeters = square inches × 6.4516

The area in square centimeters is equal to the area in square inches multiplied by 6.4516.

For example, here's how to convert 5 square inches to square centimeters using the formula above.
square centimeters = (5 sq in × 6.4516) = 32.258 sq cm
conversion scale showing square inches and equivalent square centimeters area values

How Many Square Centimeters Are in a Square Inch?

There are 6.4516 square centimeters in a square inch, which is why we use this value in the formula above.

1 sq in = 6.4516 sq cm

Square inches and square centimeters are both units used to measure area. Keep reading to learn more about each unit of measure.

What Is a Square Inch?

One square inch is equivalent to the area of a square with sides that are each 1 inch in length. One square inch is equal to 1/144 of a square foot or 1/1,296 of a square yard.

The square inch is a US customary and imperial unit of area. A square inch is sometimes also referred to as a square in. Square inches can be abbreviated as sq in, and are also sometimes abbreviated as in². For example, 1 square inch can be written as 1 sq in or 1 in².

Learn more about square inches.

What Is a Square Centimeter?

One square centimeter is equivalent to the area of a square with 1 centimeter long sides. One square centimeter is equal to 0.155 square inches or 1/10,000 of a square meter.

The square centimeter, or square centimetre, is a multiple of the square meter, which is the SI derived unit for area. In the metric system, "centi" is the prefix for hundredths, or 10-2. A square centimeter is sometimes also referred to as a square cm. Square centimeters can be abbreviated as sq cm, and are also sometimes abbreviated as cm². For example, 1 square centimeter can be written as 1 sq cm or 1 cm².

Learn more about square centimeters.

Square Inch to Square Centimeter Conversion Table

Table showing various square inch measurements converted to square centimeters.
Square Inches Square Centimeters
1 sq in 6.4516 sq cm
2 sq in 12.9 sq cm
3 sq in 19.35 sq cm
4 sq in 25.81 sq cm
5 sq in 32.26 sq cm
6 sq in 38.71 sq cm
7 sq in 45.16 sq cm
8 sq in 51.61 sq cm
9 sq in 58.06 sq cm
10 sq in 64.52 sq cm
11 sq in 70.97 sq cm
12 sq in 77.42 sq cm
13 sq in 83.87 sq cm
14 sq in 90.32 sq cm
15 sq in 96.77 sq cm
16 sq in 103.23 sq cm
17 sq in 109.68 sq cm
18 sq in 116.13 sq cm
19 sq in 122.58 sq cm
20 sq in 129.03 sq cm
21 sq in 135.48 sq cm
22 sq in 141.94 sq cm
23 sq in 148.39 sq cm
24 sq in 154.84 sq cm
25 sq in 161.29 sq cm
26 sq in 167.74 sq cm
27 sq in 174.19 sq cm
28 sq in 180.64 sq cm
29 sq in 187.1 sq cm
30 sq in 193.55 sq cm
31 sq in 200 sq cm
32 sq in 206.45 sq cm
33 sq in 212.9 sq cm
34 sq in 219.35 sq cm
35 sq in 225.81 sq cm
36 sq in 232.26 sq cm
37 sq in 238.71 sq cm
38 sq in 245.16 sq cm
39 sq in 251.61 sq cm
40 sq in 258.06 sq cm

More Square Inch & Square Centimeter Conversions