Condom Size and Penis Size

Penis Length: Many studies report the average erect penis length is about 6 inches. Anywhere from 5 inches to 7 inches is a common erect penis length.
Penis Girth: Many studies report the average girth of an erect penis is about 4.5 inches. Anywhere from 4 inches to 5 inches is a common girth for an erect penis.

IMPORTANT: to prevent slipping, the condom girth should always be smaller than the penis girth (circumference)
Small condoms – recommended for a penis under 5 inches in length, or under 4 inches in girth (condom girth less than 3.9 inches)
Standard condoms – recommended for a penis between 5-7 inches in length, or 4-5 inches in girth (condom girth 4.0 - 4.39 inches)
Large condoms – recommended for a penis over 7 inches in length, or over 5 inches girth (condom girth 4.40+ inches)