# circular inch to square inch conversion

Conversion number between circular inch [circ in] and square inch [sq in] is 0.78539816339745. This means, that circular inch is smaller unit than square inch.

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Switch to reverse conversion:
from square inch to circular inch conversion

### Enter the number in circular inch:

Decimal Fraction Exponential Expression
 [circ in]
eg.: 10.12345 or 1.123e5

Result in square inch

?
 precision 0 1 2 3 4 5 6 7 8 9 [info] Decimal: Exponential:

### Calculation process of conversion value

• 1 circular inch = (5.06707479097498*10^-04) / (0.00064516) = 0.78539816339745 square inch
• 1 square inch = (0.00064516) / (5.06707479097498*10^-04) = 1.2732395447352 circular inch
• ? circular inch × (5.06707479097498*10^-04  ("m²"/"circular inch")) / (0.00064516  ("m²"/"square inch")) = ? square inch

### High precision conversion

If conversion between circular inch to square-metre and square-metre to square inch is exactly definied, high precision conversion from circular inch to square inch is enabled.

Since definition contain rounded number(s) too, there is no sense for high precision calculation, but if you want, you can enable it. Keep in mind, that converted number will be inaccurate due this rounding error!

### circular inch to square inch conversion chart

 Start value: [circular inch] Step size [circular inch] How many lines? (max 100)

visual:
circular inchsquare inch
00
107.8539816339745
2015.707963267949
3023.561944901923
4031.415926535898
5039.269908169872
6047.123889803847
7054.977871437821
8062.831853071796
9070.68583470577
10078.539816339745
11086.393797973719
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## Multiple conversion

Enter numbers in circular inch and click convert button.
One number per line.

Converted numbers in square inch:
Click to select all

## Details about circular inch and square inch units:

Convert Circular inch to other unit:

### circular inch

Definition of circular inch unit: ≡  π⁄4 sq in. Area of circle with diameter of 1 inch, value exactly π × 0.00016129 ≈ 5.067075×10-4 m²

Convert Square inch to other unit:

### square inch

Definition of square inch unit: ≡ 1 in × 1 in. Area equal with 1 inch by 1 inch square ≡ 0.0254 × 0.0254 = 6.4516×10−4 m²

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