Is 6 inches big?
Yes — 6 inches (15.2 cm) erect is above average. Only about 10% of men exceed it, placing 6 inches around the 90th percentile.
Yes. Six inches (15.2 cm) erect is comfortably above average — about the 90th percentile, bigger than nine men in ten.
The mean erect length is 13.12 cm (5.16 in), so 6 inches clears it by more than 2 cm. That doesn’t sound dramatic until you remember how packed the middle of the distribution is: the same 2 cm carries you from the crowd at the average all the way out to the top tenth.
It also sits right on the line where “above average” turns into “large.” Above average kicks in around 14.2 cm (5.6 in); the top 10% — what most people mean by big — starts right about where 6 inches lands. So 6 inches isn’t just past average, it’s at the entrance to the large bracket.
More on the thresholds in how big is big and the full statistics.