The average vertical for a man is 16-20 inches and 12-16 for women. Going back to the 10 feet and 9 inches needed to dunk, this means your standing reach (for the average man) needs to be between 8'1'' and 8'5'' (and 8'5'' and 8'9'' for women).

What percent of humans can dunk?

Most people can't dunk like Blake Griffin. In fact, most people can't dunk, period. Of the 6 billion people in the world, probably only around 1 percent can dunk, will dunk or have ever dunked a basketball on a regulation-size hoop in their lifetime.

Can the average person dunk a basketball?

You'll need to jump roughly 24 inches to touch the rim and 30 inches to dunk a full sized basketball (assuming average arm length). While the height difference between a 5 foot 9 person and a 6 foot person is only 3 inches, it's actually a lot easier around this height for two reasons.