Basketball rules come down to one simple goal: score more points than the other team by shooting the ball through a hoop 10 feet (3.05 m) off the floor. Each side has five players on court, baskets are worth one, two or three points, and you must obey limits on how you move with the ball and how much contact you make. This guide covers everything from court size to foul trouble, so you can follow any game with confidence.
In this guide
The Objective of the Game
Two teams of five compete to put the ball through the opponent’s basket while defending their own. The team with the most points when the clock hits zero wins. There are no draws: if the scores are level, the game goes to overtime.
You can move the ball by dribbling (bouncing it with one hand) or passing it. You cannot run with it in your hands, kick it deliberately or hold it for too long. Almost every one of the basketball rules below exists to protect that balance between attack and defence.
Court and Hoop Dimensions
Basketball rules on court size differ slightly between the NBA, college basketball and international (FIBA) play, but the hoop height is the same everywhere: 10 feet to the top of the rim.
| Feature | NBA | FIBA (international) | NCAA (US college) |
|---|---|---|---|
| Court size | 94 x 50 ft | 28 x 15 m (approx. 91.9 x 49.2 ft) | 94 x 50 ft |
| Rim height | 10 ft | 3.05 m | 10 ft |
| Three-point line (top of arc) | 23 ft 9 in (22 ft in corners) | 6.75 m (6.60 m in corners) | 22 ft 1.75 in |
| Lane (paint) width | 16 ft | 4.9 m | 12 ft |
| Shot clock | 24 seconds | 24 seconds | 30 seconds |
The free-throw line sits 15 feet (about 4.6 m) from the backboard. The rim is 18 inches in diameter, roughly twice the width of the ball, which is why shooters have a little more margin than it looks from the stands.
Game Length: NBA vs FIBA vs NCAA
How long a game lasts depends on which basketball rules apply. Every league uses a stopped clock, so a 48-minute NBA game typically takes well over two hours in real time.
| Competition | Periods | Total playing time | Overtime |
|---|---|---|---|
| NBA | 4 quarters of 12 minutes | 48 minutes | 5 minutes |
| FIBA (Olympics, World Cup, most leagues outside the US) | 4 quarters of 10 minutes | 40 minutes | 5 minutes |
| NCAA men | 2 halves of 20 minutes | 40 minutes | 5 minutes |
| NCAA women | 4 quarters of 10 minutes | 40 minutes | 5 minutes |
The NCAA men’s rules committees have discussed switching from halves to quarters, but no change has been approved, so halves remain the format for now.
How Scoring Works in Basketball
Points are the whole story, and the basketball rules on scoring have only three values to learn.
Free throws: 1 point
Free throws are unguarded shots from the free-throw line, awarded after certain fouls. Each successful attempt is worth one point. A player fouled while shooting a two-pointer that misses gets two free throws; on a missed three-pointer, they get three.
Field goals: 2 or 3 points
Any basket scored during live play inside the three-point arc counts for two points. A shot taken with both feet behind the arc counts for three. If a shooter’s foot touches the line, it is a two.
The and-one
If a player is fouled while shooting and the shot still goes in, the basket counts and they get one bonus free throw. That is the “and-one”. Make it after a two-pointer and you have a three-point play; a four-point play happens when it follows a made three.
The Five Basketball Positions
Positions are not defined in the basketball rules themselves, and the modern game is increasingly “positionless”. Still, the five traditional roles are still the best way to understand a line-up:
- Point guard (1): the primary ball-handler and playmaker who brings the ball up court and runs the offence.
- Shooting guard (2): usually the team’s best perimeter shooter, often tasked with scoring off screens and from the three-point line.
- Small forward (3): a versatile wing who can score, defend multiple positions and attack the basket.
- Power forward (4): a bigger player who rebounds, sets screens and increasingly stretches the floor with outside shooting.
- Centre (5): typically the tallest player, anchoring the defence near the rim, blocking shots and finishing close to the basket.
Teams can substitute freely during stoppages, and there is no limit on the number of substitutions in a game.
Key Basketball Rules on Violations
A violation is a non-contact breach of the basketball rules. The penalty is simple: the other team gets possession, usually with a throw-in from the sideline or baseline.
Travelling
You cannot run with the ball. Once you gather it, you are generally allowed two steps before you must pass, shoot or release a dribble. Moving or switching your pivot foot while standing still is also a travel.
Double dribble
Once you stop dribbling and hold the ball, you cannot start dribbling again. Dribbling with both hands at the same time is also a double dribble.
Shot clock violation
The attacking team must attempt a shot that hits the rim before the shot clock expires: 24 seconds in the NBA and FIBA, 30 seconds in NCAA play. In the NBA and FIBA, an offensive rebound off the rim resets the clock to 14 seconds.
Three-second rule
An attacking player cannot stay in the lane (the painted area near the basket) for more than three consecutive seconds. The NBA also has a defensive three-second rule, which stops a defender camping in the lane without actively guarding someone.
Backcourt violations
After an inbound in the backcourt, the offence must get the ball over the half-court line within eight seconds in the NBA and FIBA, or ten seconds in NCAA play. Once the ball is in the frontcourt, the attacking team cannot take it back across the half-court line.
Goaltending
Defenders cannot touch a shot on its downward path to the basket when it has a chance of going in, or touch the ball while it is directly above the rim. Defensive goaltending awards the points as if the shot had scored; offensive goaltending cancels the basket. FIBA is a little more lenient once the ball has touched the rim.
Fouls, Foul-Outs and the Bonus
A foul is illegal personal contact (pushing, holding, hitting, blocking) or unsportsmanlike conduct. Understanding fouls is what separates casual viewers from people who truly understand basketball rules.
Types of foul
- Personal foul: illegal contact, such as reaching in, blocking a moving player or charging into a set defender.
- Shooting foul: contact on a player in the act of shooting, rewarded with free throws.
- Technical foul: usually for unsportsmanlike behaviour such as arguing with officials; the opponent gets a free throw.
- Flagrant (NBA/NCAA) or unsportsmanlike (FIBA) foul: excessive or unnecessary contact, punished with free throws plus possession, and possibly an ejection.
Fouling out
Players have a personal foul limit. In the NBA, a player is disqualified on their sixth foul. In FIBA and NCAA games, the limit is five. Foul trouble is why coaches often bench stars who pick up early fouls.
The bonus (penalty situation)
Team fouls also add up, and this is where basketball rules differ most between competitions. Once a team passes its limit, the opponent shoots free throws even on non-shooting fouls:
- NBA: from the fifth team foul in a quarter, or from the second foul in the final two minutes of a period if the team was not already in the penalty.
- FIBA: after four team fouls in a quarter, every further defensive foul brings two free throws.
- NCAA men: the seventh team foul in a half gives a “one-and-one”; the tenth brings two shots, known as the double bonus.
- NCAA women: two free throws from the fifth team foul in a quarter.
Timeouts
Basketball rules on timeouts vary noticeably between leagues. Timeouts let coaches stop play to rest players, draw up plays or halt an opponent’s momentum. In the NBA, each team has seven timeouts per game, with a maximum of four in the fourth quarter and two after the three-minute mark of that quarter. In FIBA play, teams get two in the first half and three in the second, with no more than two in the last two minutes of the fourth quarter.
College games add scheduled media timeouts for broadcast breaks, which is why NCAA games can feel stop-start. Teams also receive extra timeouts in overtime.
Overtime
Basketball rules do not allow a game to end in a tie. If the score is level at the end of regulation, the teams play a five-minute overtime period in the NBA, FIBA and NCAA. If it is still level, they keep playing five-minute periods until someone wins. Personal fouls carry over, so a player with five fouls in the NBA is one whistle away from the bench.
Beginner Viewing Tips
Once you know the basic basketball rules, these habits will help you read a game like an insider:
- Watch the shot clock, not just the game clock. Late-clock possessions often produce rushed, low-percentage shots.
- Track team fouls. A team in the bonus early in a quarter has to defend more cautiously.
- Follow players without the ball. Screens, cuts and spacing create most good shots.
- Notice the end-of-game fouling. Trailing teams foul on purpose to stop the clock and hope for missed free throws.
- Know which rulebook applies. An Olympic game uses FIBA rules, so expect 40 minutes and a five-foul limit.
If you follow several sports, our guides to football (soccer) rules and how tennis scoring works use the same plain-English approach. Players looking to improve on court should also try our speed and agility drills. For the full professional rulebook, see the official NBA rulebook.
Frequently Asked Questions
What are the basic basketball rules for beginners?
Under basketball rules, two teams of five try to score through a 10-foot hoop. You must dribble while moving with the ball, avoid illegal contact, and shoot before the shot clock expires. Baskets are worth one, two or three points, and the team with the most points at the end wins, with overtime to break any tie.
How many fouls before a player fouls out?
In the NBA, a player fouls out on their sixth personal foul. Under FIBA and NCAA rules, the limit is five. A fouled-out player must leave the game and cannot return, although their team still continues with five players on court using a substitute from the bench.
What is the difference between NBA and FIBA basketball rules?
NBA games last 48 minutes with 12-minute quarters, while FIBA games last 40 minutes with 10-minute quarters. The NBA three-point line is deeper, players can commit six fouls instead of five, and the NBA uses a defensive three-second rule that FIBA does not.
What does “and-one” mean in basketball?
An and-one happens when a player is fouled while shooting and the shot still goes in. The basket counts and the shooter gets one extra free throw. If they make it after a two-point basket, it is a three-point play; after a made three, it becomes a four-point play.
Why does the NBA shot clock reset to 14 seconds?
When the attacking team grabs an offensive rebound after the ball hits the rim, the NBA and FIBA reset the shot clock to 14 seconds rather than 24. This keeps the pace of play high and stops teams from running down long possessions after a second-chance rebound.
Key Takeaways
- Five players per side, a 10-foot hoop, and baskets worth one, two or three points.
- NBA games last 48 minutes; FIBA and NCAA games last 40.
- Violations cost possession; fouls can lead to free throws and disqualification.
- Learn the basketball rules on the shot clock and team fouls, and most late-game decisions will make sense.
