c = d * π / e;
d = c * e / π;
Where c is the circumference, d is the diameter, e is a measure of the eccentricity (off-roundness) of the penis and π (pi) is 3.14159. e would be 1.0 for a perfectly cylindrical penis and a little greater than one for the usual oval-triangular cross section penis. I have used the value of e = 1.05 in computing the following table. One inch is 2.54 cm. The finger measurement refers to the circumference of that many male fingers barely inserted into an anus. It is a very approximate measure. Here is how you interconvert.
Penis Girth Conversion Table | |||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
circ in |
2 | 2½ | 2¼ | 2¾ | 3 | 3¼ | 3½ | 3¾ | 4 | 4¼ | 4½ | 4¾ | 5 | 5¼ | 5½ | 5¾ | 6 | 6¼ | 6½ | 6¾ | 7 | 7¼ | 7½ | 7¾ | 8 |
diam in |
0.67 | 0.75 | 0.84 | 0.92 | 1.00 | 1.09 | 1.17 | 1.25 | 1.34 | 1.42 | 1.50 | 1.59 | 1.67 | 1.75 | 1.84 | 1.92 | 2.01 | 2.09 | 2.17 | 2.26 | 2.34 | 2.42 | 2.51 | 2.59 | 2.67 |
circ cm |
5.08 | 5.72 | 6.35 | 6.98 | 7.62 | 8.26 | 8.89 | 9.52 | 10.16 | 10.80 | 11.43 | 12.06 | 12.70 | 13.34 | 13.97 | 14.60 | 15.24 | 15.88 | 16.51 | 17.14 | 17.78 | 18.42 | 19.05 | 19.68 | 20.32 |
diam cm |
1.70 | 1.91 | 2.12 | 2.33 | 2.55 | 2.76 | 2.97 | 3.18 | 3.40 | 3.61 | 3.82 | 4.03 | 4.24 | 4.46 | 4.67 | 4.88 | 5.09 | 5.31 | 5.52 | 5.73 | 5.94 | 6.15 | 6.37 | 6.58 | 6.79 |
fingers | 1 | 1½ | 2 | 2½ | 3 | 3½ | 4 | 4½ | 5 | 5½ | 6 | 6½ | 7 | 7½ | 8 | 8½ | 9 | 9½ | 10 | 10½ | 11 |
Some people are fascinated by the head size. They want the circumference of the corona, measured at whatever angle it tilts.
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