Scoring guideScoreMetrik

How Badminton Scoring Works

Badminton scoring is built around rallies, Games, and the match. Every rally produces a point, and the side that wins the rally becomes or remains the serving side for the next rally.

Under the current BWF international scoring system, a match is normally best of three Games. Games use a 21-point target, with special rules at 20-all and 29-all.

BWF has also approved a 3×15 system for international use from January 4, 2027. This guide explains both formats, how serve changes, and how to read the score.

Keeping score during a match? Open the Free Online Badminton Scoreboard.

Current Badminton Scoring: Best of 3 Games to 21

Under the current BWF international system, a badminton match is normally played as the best of three Games. Each Game starts at 0–0, and the first side to win two Games wins the match.

Every rally is worth one point. It does not matter which side served: the side that wins the rally adds a point to its score. A normal Game is played to 21, subject to the two-point-margin and maximum-score rules.

21–10

21–17

22–20

25–23

30–29

Near the end of a close Game, the important question is not only whether a side has reached 21, but whether the required winning condition has been met.

What Happens at 20-All?

If the score reaches 20–20, the Game does not end when the next side reaches 21. From 20-all, a side must normally establish a two-point lead.

21–20: the Game continues because the lead is only one point.

22–20: the two-point margin ends the Game.

If the score becomes 21–21, 22–22, 23–23, or another tie, play continues until a side gains the required margin or the maximum score is reached.

What Happens at 29-All?

Badminton does not allow a Game to continue indefinitely. If the score reaches 29–29, the side that wins the next rally scores the 30th point and wins the Game.

29–29 → next rally wins 30–29

A 30–29 result is the highest possible Game score under the current 3×21 format. At 29-all, there is no requirement to win by two.

Who Scores a Point After a Rally?

Badminton uses rally scoring, so the winner of every rally adds one point to its score.

  • If the serving side wins, it scores one point and continues serving.
  • If the receiving side wins, it scores one point and becomes the new serving side.

For current badminton scorekeeping, every completed rally can change the score.

How Serve Changes in Badminton

The side that wins a rally earns the point and has the right to serve the next rally. Which service court is used depends on the serving side's score.

A serving-side score of zero or another even number corresponds to the right service court. An odd serving-side score corresponds to the left service court.

Singles applies this rule directly. Doubles must also preserve the service and receiving order of four individual players.

Singles Service Courts: Even Right, Odd Left

Even score → Right

Odd score → Left

When the server's score is 0, 2, 4, 6, or another even number, the server uses the right service court. At 1, 3, 5, 7, or another odd number, the server uses the left service court.

If the receiver wins the rally, the receiver scores, becomes the new server, and serves from the court that matches the new server's score.

How Doubles Scoring and Serve Work

Doubles uses the same rally-scoring principle. Every rally winner earns one point, and the serving side uses the right court for a score of zero or another even number and the left court for an odd score.

When the serving pair wins, that side scores and continues serving. When the receiving pair wins, it scores and gains the serve.

Doubles also has an individual player service order and court-position sequence. ScoreMetrik's current Badminton Scoreboard intentionally works at team level for doubles: it tracks the serving side or team, but it does not identify the individual server, receiver, or complete player rotation.

Badminton Score Example

Imagine Player A and Player B are playing the first Game. Player A leads 18–17 and then wins two rallies, moving the score to 19–17 and 20–17. One more rally won by Player A produces 21–17 and ends the Game.

Now start from 20–20. If Player A wins once, the score is 21–20, but the Game is not over because the lead is only one. If Player A wins again, 22–20 supplies the two-point margin and ends the Game.

The BWF 3×15 System From January 4, 2027

BWF has approved a 3×15 scoring system scheduled to become the international baseline from January 4, 2027. The match remains best of three Games, and the first side to win two Games wins the match.

  • Games use a 15-point target instead of 21.
  • At 14-all, a side must normally gain a two-point lead.
  • The maximum score is 21.
  • At 20-all, the next rally wins the Game 21–20.

Valid completed scores include 15–8, 15–12, 16–14, 18–16, and 21–20. The target changes, but every rally winner still scores a point.

3×21 vs 3×15

Current BWF international 3×21

  • Best of three Games
  • Game target: 21
  • Win by two after 20-all
  • Maximum score: 30
  • 29-all → next rally wins 30–29

BWF 3×15 from January 4, 2027

  • Best of three Games
  • Game target: 15
  • Win by two after 14-all
  • Maximum score: 21
  • 20-all → next rally wins 21–20

The 3×15 system shortens the Game target, but it does not change the basic rally → point → Game → match structure.

Which Scoring Format Should You Use?

Use the scoring format specified for the match or competition you are playing. As of 2026, the BWF international baseline remains 3×21 through January 3, 2027, and the approved BWF 3×15 system is scheduled to take effect internationally on January 4, 2027.

Some national associations or domestic competitions may adopt 3×15 earlier. The calendar year alone is therefore not always enough to choose the format for a local match. For an organised event, check its published rules; for casual play, agree on a format before the match begins.

Keep Score During a Match

Once you know the scoring system, open the ScoreMetrik Badminton Scoreboard to keep the match score in your browser.

It supports rally points, Games, serving side, singles service-court guidance, current 3×21 scoring, the 3×15 preset effective January 4, 2027, Custom scoring, Undo/Redo, and a fullscreen display. No signup is required.

Badminton Scoring FAQ

How many points do you need to win a badminton Game?

Under the current BWF international 3×21 system, the normal target is 21. At 20-all, a two-point lead is normally required; at 29-all, the next point wins 30–29.

Is badminton best of three Games?

Under the standard BWF match format described here, yes. The first side to win two Games wins the match. A specific local competition can publish a different format.

Does every badminton rally score a point?

Yes under the current rally-scoring system. The side that wins the rally adds one point to its score.

Who serves after winning a rally?

The side that wins the rally has the serve for the next rally. A serving side that wins keeps serve; a receiving side that wins scores and becomes the serving side.

Which side do you serve from in badminton?

Use the serving side's score. Zero or an even score uses the right service court, while an odd score uses the left service court.

What happens at 20–20 in badminton?

Under current 3×21 scoring, 21–20 does not normally end the Game. A side needs a two-point lead unless the maximum-score rule is reached.

What happens at 29–29?

The next rally decides the Game, and its winner takes the Game 30–29.

When does the BWF 3×15 scoring system start?

The approved international effective date is January 4, 2027. Some domestic competitions may use 3×15 earlier, so check the rules for the event being scored.

How does 3×15 badminton scoring work?

A Game has a normal target of 15. At 14-all, a two-point lead is normally required. The Game is capped at 21, so at 20-all the next rally wins 21–20.

Does doubles use different point scoring?

The rally-point system is the same, but doubles has additional serving and receiving order rules for four players. A team-level scoreboard does not track the complete individual rotation.

Rules Reference

Current 3×21 scoring and the singles and doubles service-court rules follow the BWF Laws of Badminton.

The January 4, 2027 transition is also recorded in the USA Badminton 3×15 announcement, published by a BWF member association. Some domestic competitions may transition earlier, so the rules published for the event remain decisive.

These links are references only. ScoreMetrik is independent and is not affiliated with, approved by, certified by, or endorsed by BWF.