A slam dunk is a basketball shot in which a player jumps high enough to push the ball down directly through the hoop with one or both hands, usually with the hand at or above the level of the rim. Because the shooter is so close to the basket and scoring from above it, a dunk is one of the highest-percentage — and most exciting — ways to score in the game.

How a slam dunk works

To dunk, a player drives or leaps toward the basket, rises into the air, and thrusts the ball down through the 10-foot-high (3.05-meter) hoop rather than releasing it in an arc like a normal shot. The defining feature is that the ball is forced downward through the rim while the player’s hand is level with or above it. This requires a combination of jumping ability and reach, which is why dunking is more common among taller players and elite athletes — though shorter players with exceptional leaping ability can dunk too. Being able to grip the ball firmly in one hand helps, since many dunks are finished with a single hand while the body is fully extended in the air. The move rewards timing as much as raw height: a well-judged run-up and take-off let a player reach the rim even in a crowd of defenders.

How many points is a dunk worth?

A slam dunk is worth the same as any other field goal taken from the same place on the court. Since dunks happen right at the basket, inside the three-point line, a dunk is almost always worth two points. The dunk itself carries no bonus — a spectacular windmill and a simple lay-up from the same spot both count for two. The value comes from how reliable and high-energy the play is, not from extra points on the scoreboard. In theory, if a player could dunk from beyond the three-point arc it would be worth three, but that is not physically possible, so in practice every dunk is a two-point play. What makes the dunk valuable is its efficiency: it is one of the highest-percentage shots in the game because the ball is placed straight into the hoop rather than shot toward it.

What are the main types of dunks?

Players have developed a wide vocabulary of dunks over the years. Some of the most common include:

  • One-handed dunk — the ball is slammed down with a single hand.
  • Two-handed dunk — both hands drive the ball through, often the most powerful-looking.
  • Alley-oop — a teammate throws the ball near the rim and the dunker catches it in mid-air and finishes before landing.
  • Reverse dunk — the player approaches from one side of the basket and dunks facing away from it.
  • Windmill — the ball is swung in a circular motion before being slammed home.
  • 360 dunk — the player spins a full rotation in the air before dunking.

These variations are mostly about style and difficulty; on the scoreboard, they are all simply two-point field goals.

Is a slam dunk different from a lay-up?

Yes. Both are close-range shots, but the mechanics differ. In a lay-up, the player releases the ball softly toward the basket, often using the backboard, and the ball drops in from the shooter’s gentle touch. In a dunk, the player keeps control of the ball all the way to the rim and forces it down through the hoop from above. A dunk is generally the higher-percentage play when a player can reach the rim, because the ball is placed directly into the basket rather than shot toward it.

Are there any rules about dunking?

Dunking is fully legal in modern basketball and governed by the same field-goal rules as any other shot under leagues such as the NBA and the international body FIBA. There was a period in college basketball history when dunking was banned, but that restriction was lifted long ago, and today dunking is a normal, celebrated part of the game. Players must still obey the usual rules — no traveling, no offensive fouls, and no hanging on the rim longer than needed for safety, which can draw a technical foul.

What is a slam dunk contest?

Because dunks are so visually dramatic, many leagues stage dedicated dunk contests where players are judged purely on creativity, difficulty, and execution rather than on scoring in a game. The NBA’s Slam Dunk Contest, held during its All-Star weekend, is the best-known example, and similar events appear in leagues and exhibitions worldwide. In these contests the dunk is the whole point, and judges reward the most inventive and athletic attempts.

Why is the slam dunk so iconic?

The slam dunk has become one of basketball’s signature images because it combines power, athleticism, and drama in a single moment. It often energizes a crowd and can shift the momentum of a game, even though it is worth no more than a routine basket. A big dunk over a defender is also a psychological moment, and players and fans treat it as a statement as much as a score. That mix of efficiency and spectacle is why the dunk is featured so heavily in highlight reels and marketing, and why it remains one of the first things new fans learn to recognize. If you enjoy learning the defining moves of different sports, you might also like our guides to the hat-trick in football, the clean sheet, and the Grand Slam in tennis.