Everything goes haywire during puberty. Things start growing at different rates and times so it is hard to tell how much longer it will grow. If your penis is 7'' erect now then it will not grow much more as it is over the average size already. The average adult penis size is 5'' - 6'' erect and 3 1/2'' to 4'' flaccid (soft).
7' 7"
It depends on what your comparing 7 inches to. If it were the length of a fingernail, 7 inches is extremely long. However, if it were the height of a person, 7 inches would be very, very small.
84 inches
2 feet 7 inches
85 inches
Perimeter = 12+12+7+7 = 38 inches
about 7 inches
Less than 6 inches long (Extra small) - 72 6 inches to 6 7/8 inches long (Small) - 90 7 inches to 7 7/8 inches long (Medium) - 105 8 inches to 8 7/8 inches long (Large) - 121 Over 9 inches long (Extra large) - 135 1 cup of mashed bananas - 200 1 cup of sliced bananas - 134
That would be about 20 and 7/16 inches.
It is: 17 times 7 = 119 square inches
7 inches
7 feet