# Convert square inches to square centimeters

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

square inches (sq in)
1 square inches = 6.452 square centimeters

## Precise decimal and fraction answers

The conversion in square centimeters rounded to six significant decimal places is 1 sq in = 6.451600 cm2. The precise fraction answer is 6 1115/2469 cm2.

### Decimal Precision

Conversion from one to ten decimal places

• 1 sq in = 6.5 cm2
• 1 sq in = 6.45 cm2
• 1 sq in = 6.452 cm2
• 1 sq in = 6.4516 cm2
• 1 sq in = 6.45160 cm2
• 1 sq in = 6.451600 cm2
• 1 sq in = 6.4516000 cm2
• 1 sq in = 6.45160000 cm2
• 1 sq in = 6.451600000 cm2
• 1 sq in = 6.4516000000 cm2

## Square inches to square centimeters conversion factor and formulas

Formula

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

### Multiplication

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

### Division

Alternatively we can divide 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 inches to square centimeters, divide square inches by 0.155.
The formula is expressed as:
sq in ÷ 0.155 = cm2

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

## Reverse this conversion

Convert from square centimeters to square inches instead.

## 1 square inches to other area units

### Metric

• 1 sq in = 6.452×10-8 ha
• 1 sq in = 6.452×10-10 km2
• 1 sq in = 6.452×10-4 m2
• 1 sq in = 0.065 dm2
• 1 sq in = 6.452 cm2
• 1 sq in = 645.16 mm2
• 1 sq in = 6.452×108 µ2
• 1 sq in = 6.452×1014 nm2

### Imperial/U.S.

• 1 sq in = 1.594×10-7 acre
• 1 sq in = 2.491×10-10 sq mi
• 1 sq in = 7.716×10-4 sq yd
• 1 sq in = 0.007 sq ft
• 1 sq in = 1 sq in

## References and Citations

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

## Square inches to square centimeters conversion table

sq in cm2
1 sq in 6.452 cm2
2 sq in 12.903 cm2
3 sq in 19.355 cm2
4 sq in 25.806 cm2
5 sq in 32.258 cm2
6 sq in 38.71 cm2
7 sq in 45.161 cm2
8 sq in 51.613 cm2
9 sq in 58.064 cm2
10 sq in 64.516 cm2
sq in cm2
20 sq in 129.032 cm2
30 sq in 193.548 cm2
40 sq in 258.064 cm2
50 sq in 322.58 cm2
60 sq in 387.096 cm2
70 sq in 451.612 cm2
80 sq in 516.128 cm2
90 sq in 580.644 cm2
100 sq in 645.16 cm2
1,000 sq in 6,451.6 cm2