Square Centimeters to Square Inches Converter (cm² to in²)

1 cm² = 0.155 in²

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Formula

To convert square centimeters to square inches, multiply the value by 0.15500031.

in² = cm² × 0.15500031

Example calculation

Convert 5 cm² to in²:

5 cm² × 0.15500031 = 0.775002 in²

Conversion table

square centimeters → square inches
cm²in²
10.1550
20.3100
30.4650
40.6200
50.7750
60.9300
71.0850
81.2400
91.3950
101.5500
152.3250
203.1000
253.8750
304.6500
355.4250
406.2000
456.9750
507.7500
558.5250
609.3000
6510.0750
7010.8500
7511.6250
8012.4000
8513.1750
9013.9500
9514.7250
10015.5000
20031.0001
50077.5002
1000155.0003
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About the units

Square Centimeter (cm²)
Used for small surfaces, skin and material areas. One ten-thousandth of a square metre.
Square Inch (in²)
Used in the US for small areas and pressure (psi). Exactly 6.4516 square centimetres.

Frequently asked questions

How do I convert square centimeters to square inches?
To convert square centimeters to square inches, multiply the value by 0.15500031.
How many square inches are in 1 square centimeter?
1 square centimeter equals 0.155 in².
How many square inches are in 10 square centimeters?
10 cm² equals 1.55 in².
How do I convert square inches back to square centimeters?
Use the reverse converter: 1 square inch equals 6.4516 cm².
Is this converter accurate?
Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.

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