# circular inch to square millimetre conversion

Conversion number between circular inch [circ in] and square millimetre [mm²] is 506.7074790975. This means, that circular inch is bigger unit than square millimetre.

### Contents [show][hide]

Switch to reverse conversion:
from square millimetre 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 millimetre

?
 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) / (0.000001) = 506.7074790975 square millimetre
• 1 square millimetre = (0.000001) / (5.06707479097498*10^-04) = 0.00197352524139 circular inch
• ? circular inch × (5.06707479097498*10^-04  ("m²"/"circular inch")) / (0.000001  ("m²"/"square millimetre")) = ? square millimetre

### High precision conversion

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

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

visual:
circular inchsquare millimetre
00
105067.074790975
2010134.14958195
3015201.224372925
4020268.2991639
5025335.373954875
6030402.44874585
7035469.523536825
8040536.5983278
9045603.673118775
10050670.74790975
11055737.822700725
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## Multiple conversion

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

Converted numbers in square millimetre:
Click to select all

## Details about circular inch and square millimetre 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 millimetre to other unit:

### square millimetre

Definition of square millimetre unit: = 1 mm x 1 mm.

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