Convert square centimeters to square inches

Enter the number of square centimeters you want to convert to square inches in the text box below. The conversion to area in square inches will update as you type.

square centimeters (cm2)
1 square centimeters = 0.155 square inches

The conversion in square inches rounded to six significant decimal places is 1 cm2 = 0.155000 sq in. The precise fraction answer is 2469/15929 sq in.

Decimal Precision

Conversion from one to ten decimal places

• 1 cm2 = 0.2 sq in
• 1 cm2 = 0.16 sq in
• 1 cm2 = 0.155 sq in
• 1 cm2 = 0.1550 sq in
• 1 cm2 = 0.15500 sq in
• 1 cm2 = 0.155000 sq in
• 1 cm2 = 0.1550003 sq in
• 1 cm2 = 0.15500031 sq in
• 1 cm2 = 0.155000310 sq in
• 1 cm2 = 0.1550003100 sq in

Square centimeters to square inches conversion factor and formulas

Formula

The conversion factor between square centimeters and square inches is 6.452. This represents the ratio of square centimeters per one square inch. To calculate the value in square inches, we can either divide by the conversion factor or multiply by its inverse.

Division

To convert from square centimeters to square inches, divide square centimeters by 6.452.
The formula is expressed as:
cm2 ÷ 6.452 = sq in

Multiplication

Alternatively we can multiply by the inverse conversion factor to get the same result.
The inverse of 6.452 is 1/6.452 or 0.155. To convert from square centimeters to square inches, multiply square centimeters by 0.155.
The formula is expressed as:
cm2 × 0.155 = sq in

Converting square centimeters to square inches is a conversion between units from separate unit systems - square centimeters are metric (SI) defined units while square inches are US Customary / UK Imperial .

Reverse this conversion

Convert from square inches to square centimeters instead.

1 square centimeters to other area units

Metric

• 1 cm2 = 1×10-8 ha
• 1 cm2 = 1×10-10 km2
• 1 cm2 = 1×10-4 m2
• 1 cm2 = 0.01 dm2
• 1 cm2 = 1 cm2
• 1 cm2 = 100 mm2
• 1 cm2 = 1×108 µ2
• 1 cm2 = 1×1014 nm2

Imperial/U.S.

• 1 cm2 = 2.471×10-8 acre
• 1 cm2 = 3.861×10-11 sq mi
• 1 cm2 = 1.196×10-4 sq yd
• 1 cm2 = 0.001 sq ft
• 1 cm2 = 0.155 sq in

References and Citations

1. International Bureau of Weights and Measures (BIPM) The International System of Units (SI)
2. National Institute of Standards and Technology (NIST) General Tables of Units of Measurement

Square centimeters to square inches conversion table

cm2 sq in
1 cm2 0.155 sq in
2 cm2 0.31 sq in
3 cm2 0.465 sq in
4 cm2 0.62 sq in
5 cm2 0.775 sq in
6 cm2 0.93 sq in
7 cm2 1.085 sq in
8 cm2 1.24 sq in
9 cm2 1.395 sq in
10 cm2 1.55 sq in
cm2 sq in
20 cm2 3.1 sq in
30 cm2 4.65 sq in
40 cm2 6.2 sq in
50 cm2 7.75 sq in
60 cm2 9.3 sq in
70 cm2 10.85 sq in
80 cm2 12.4 sq in
90 cm2 13.95 sq in
100 cm2 15.5 sq in
1,000 cm2 155 sq in