Average Erect Length in Nigeria
Mean length13.12 cm5.17 in
Standard deviation±1.66 cm±0.65 in
5th percentile10.4 cm
95th percentile15.9 cm
Erect length — Nigeria (country study) Distribution (cm)
Ajmani et al. (1985, n=320)
Average Erect Girth in Nigeria
Mean girth11.66 cm4.59 in
Standard deviation±1.10 cm
5th percentile9.9 cm
95th percentile13.5 cm
Erect girth — Nigeria (global estimate) Distribution (cm)
Veale et al. (2015, n=15,521)
Erect Size: How Nigeria Compares
A clinical study of Ajmani et al. (1985, n=320) found the average erect length in Nigeria to be 13.12 cm (5.17 in), which is consistent with the global average of 13.12 cm (5.17 in). The mean erect girth is 11.66 cm (4.59 in).
Average by Country
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