How Tall Do You Have To Be To Dunk
How tall do you really need to be in order to dunk a basketball?
There is no minimum height. Spud Webb won the NBA Slam Dunk Contest at 5’7″, so the honest answer is that height decides how hard dunking will be, not whether you can do it.
Sure, you can try to grow taller, but three numbers matter more than the one on your driver’s license:
- Your standing reach
- Your vertical jump
- The height of the rim
The rim is 10 feet (120 inches) on every regulation court, so that one never changes. To dunk you need to get the ball over it, which means your hand has to reach about 6 inches above the rim: 126 inches in total.
Standing reach is how high you can touch with one arm while standing flat-footed. It is roughly your height multiplied by 1.33, and a little more if you have long arms. Subtract your standing reach from 126 inches and you have the vertical jump you need.
| Height | Typical standing reach | Vertical needed to dunk |
|---|---|---|
| 5’7″ | 7’5″ | About 37 inches |
| 5’10” | 7’9″ | About 33 inches |
| 6’0″ | 8’0″ | About 30 inches |
| 6’3″ | 8’4″ | About 26 inches |
| 6’6″ | 8’8″ | About 22 inches |
| 7’0″ | 9’3″ | About 15 inches |
These are estimates. A long-armed 6-footer may need two or three inches less, and a short-armed one two or three more. For scale, an untrained adult man jumps somewhere around 16 to 20 inches, and the average at the NBA draft combine is in the mid-30s. That is why almost any 7-footer can dunk without training, and why a 5’10” dunker is a rare athlete.
How far is your head from the rim?
Type your height to stand next to the shortest dunk champions and the average NBA player.
Height and Wingspan Relationship in Basketball
Height gets the attention, but reach does the work. Two players of the same height can have standing reaches four or five inches apart, because wingspan (fingertip to fingertip with the arms out) varies a lot from person to person. For most people it is about equal to height. In the NBA it is usually several inches longer.
For dunking, every extra inch of reach is an inch you don't have to jump. That is the whole relationship. It is also why scouts measure standing reach and wingspan at the draft combine and care less about listed height than fans do.
Importance of Vertical Leap in Dunking
Your reach is fixed once you stop growing. Your vertical is the one number you can change, and it matters more than people think. A 6'0" player with a 36-inch vertical gets higher above the rim than a 6'6" player with a 24-inch vertical.
A good rule of thumb: clearing the rim by 6 inches gets you a one-handed dunk with a ball you can palm. Two-handed dunks, or dunks with a ball you can't palm, need a few inches more.
What exercises are good for dunking?
Jumping is strength applied quickly, so training for it means getting stronger and then getting faster.
- Squats. The base of everything. Stronger legs and hips mean more force into the floor.
- Deadlifts. They build the hamstrings, glutes and lower back, which do most of the work in a jump.
- Lunges and split squats. Most dunks come off one leg, so train one leg at a time.
- Box jumps and depth jumps. Plyometrics teach your muscles to produce force fast.
- Calf raises. The last push off the floor comes from the ankles.
- Jump rope. Good for ankle stiffness and rhythm, and an easy warm-up.
- Actual jumping. Practice your approach and touch the rim or the backboard a few dozen times a week. Technique is worth a couple of inches by itself.
Two more things help. Losing excess body fat raises your vertical without any new strength, and stretching your hips and ankles lets you use the strength you have. If you're new to lifting, get a coach to check your form before you add weight. For vitamins and the like, see our guide to basketball supplements here.
Average Height of NBA Dunkers
The average NBA player is about 6'6" or 6'7", and nearly everyone in the league can dunk. The famous dunkers come in every size: LeBron James at 6'9", Blake Griffin and Dwight Howard at 6'10", Vince Carter at 6'6", and at the other end Spud Webb at 5'7" and Nate Robinson at 5'9".
Short Players Who Can Dunk
Spud Webb
Webb was 5'7" and won the 1986 Slam Dunk Contest, beating his own Atlanta teammate Dominique Wilkins, the defending champion. His vertical was reported at 42 inches or more. He is still the shortest winner the contest has had.
Nate Robinson
Robinson, at 5'9", won the contest three times (2006, 2009 and 2010). In 2006 he dunked over Webb himself, and in 2009 he jumped over the 6'10" Dwight Howard. His vertical was measured at 43.5 inches.
Mac McClung
McClung is 6'2", small for a contest dunker in the modern league, and he won three in a row from 2023 to 2025 while spending most of his time in the G League.
The shortest Slam Dunk Contest winners
Listed heights of every winner shorter than 6'5", next to the tallest winner and the average NBA player.
Show the data behind this chart
Item
Value
Spud Webb (1986)
5'7" (some list 5'6")
Nate Robinson (2006, 2009, 2010)
5'9"
Dee Brown (1991)
6'2"
Donovan Mitchell (2018)
6'2"
Mac McClung (2023-25)
6'2"
John Wall (2014)
6'3"
Anfernee Simons (2021)
6'3"
Fred Jones (2004)
6'4"
Avg NBA player
6'6.6"
Dwight Howard (2008), tallest
6'10"
The Risks of Dunking
The landing is the dangerous part. Dunking puts a lot of load on the knees, ankles and lower back, and hanging on the rim and coming down off balance is how most dunking injuries happen. Warm up, land on two feet when you can, and don't hang on a rim that isn't a breakaway rim. A fixed rim on an outdoor court can bend or snap, and the backboard can come down with it.
The History of Dunking in the NBA
The dunk is older than the NBA. Bob Kurland, a 7-footer at Oklahoma A&M in the 1940s, is usually credited as the first player to dunk regularly in games. For decades it was seen as a big man's shortcut, not a skill. College basketball went as far as banning it from 1967 to 1976, a rule widely understood to be aimed at UCLA's Lew Alcindor, the future Kareem Abdul-Jabbar.
The ABA turned it into a show. Its 1976 All-Star Game had the first slam dunk contest, and Julius Erving won it by taking off from the free-throw line. The NBA brought the contest back in 1984, when Larry Nance won. In between, Darryl Dawkins shattered two backboards in 1979, and the league responded with the breakaway rim.
From there the contest gave the league some of its best-known moments: Michael Jordan against Dominique Wilkins in 1988, Vince Carter in 2000, and Zach LaVine against Aaron Gordon in 2016.
The Best Dunkers in NBA History
- Vince Carter. His 2000 contest is the standard every other one is measured against, and a few months later he jumped over a 7'2" French center at the Olympics.
- Michael Jordan. Contest champion in 1987 and 1988, the second time from the free-throw line.
- Julius Erving. Dr. J made the dunk an art form in the ABA and brought it with him to the NBA. He entered the Hall of Fame in 1993.
- Dominique Wilkins. The "Human Highlight Film" won the contest in 1985 and 1990, and nobody dunked harder in games. Hall of Fame, 2006.
- LeBron James. He never entered the contest, but no one has dunked in traffic at full speed for as many seasons. Read about LeBron James supplements intake here.
