How Long Does a Tournament Take: Bracket Duration by Team Count and Court Count
A 16-team single elimination tournament takes 2.5 hours on four courts at 30 minutes per match. The same 16 teams in round robin take 15.0 hours on the same four courts. Single elimination plays 15 matches. Round robin plays 120 matches. The gap of 105 matches decides whether a tournament fits inside one day.
How long does a 16 team single elimination tournament take?
A 16-team single elimination bracket runs 15 matches over 4 rounds. Four courts compress that bracket into 5 time slots, which equals 2.5 hours at 30 minutes per match. Two courts produce 8 slots and 4.0 hours. One court produces 15 slots and 7.5 hours.
Single elimination sends the loser of every match out of the tournament. The format plays N−1 matches for N entrants. Matches inside one round run in parallel on separate courts, and the rounds run in sequence. The model below fixes match length at 30 minutes.
| Entrants | Matches | 1 court | 2 courts | 4 courts |
|---|---|---|---|---|
| 8 | 7 | 7 slots, 3.5 h | 4 slots, 2.0 h | 3 slots, 1.5 h |
| 16 | 15 | 15 slots, 7.5 h | 8 slots, 4.0 h | 5 slots, 2.5 h |
| 24 | 23 | 23 slots, 11.5 h | 13 slots, 6.5 h | 8 slots, 4.0 h |
| 32 | 31 | 31 slots, 15.5 h | 16 slots, 8.0 h | 9 slots, 4.5 h |
| 64 | 63 | 63 slots, 31.5 h | 32 slots, 16.0 h | 17 slots, 8.5 h |
The second court cuts a 16-team bracket from 7.5 hours to 4.0 hours. The third and fourth courts cut it further to 2.5 hours. A fifth court changes nothing at 16 teams, because the first round holds only 8 simultaneous matches and later rounds hold fewer.
How many matches does a round robin tournament play?
Round robin plays N×(N−1)/2 matches, so 8 teams play 28 matches, 16 teams play 120, 24 teams play 276, 32 teams play 496, and 64 teams play 2016. Every entrant gets N−1 matches, the highest guarantee of any bracket format.
Round robin pairs every entrant with every other entrant once. A 16-team round robin on four courts fills 30 slots, which equals 15.0 hours of play. A single 8-hour day holds 16 slots on four courts, so the 16-team round robin overruns one day by 7.0 hours.
| Entrants | Matches | Slots on 4 courts | Hours | Matches per entrant |
|---|---|---|---|---|
| 8 | 28 | 7 | 3.5 | 7 |
| 16 | 120 | 30 | 15.0 | 15 |
| 24 | 276 | 69 | 34.5 | 23 |
| 32 | 496 | 124 | 62.0 | 31 |
| 64 | 2016 | 504 | 252.0 | 63 |
Round robin at 64 entrants reaches 252.0 hours on four courts. That total spans 31 working days of 8 hours.
How do the three bracket formats compare on time and fairness?
Single elimination guarantees 1 match per entrant, double elimination guarantees 2, and round robin guarantees N−1. Match totals for 16 teams are 15, 30, and 120. Guaranteed matches per entrant is the criterion that separates the three formats, and total time follows from it.
Double elimination sends an entrant out after 2 losses. The format plays 2N−2 matches, and a reset final adds 1 more. A 16-team double elimination bracket holds 30 matches, double the single elimination total, and doubles the guarantee from 1 match to 2.
| Entrants | Single elimination | Double elimination | Round robin |
|---|---|---|---|
| 8 | 7 | 14 | 28 |
| 16 | 15 | 30 | 120 |
| 24 | 23 | 46 | 276 |
| 32 | 31 | 62 | 496 |
| 64 | 63 | 126 | 2016 |
Single elimination sends half the field home after one match. Double elimination costs 15 extra matches at 16 teams and returns a second match to every entrant. Round robin costs 105 extra matches at 16 teams and returns 14 extra matches to every entrant.
How many byes does a 12 team bracket get?
A 12-team single elimination bracket gets 4 byes. The bye count equals the nearest power of two above the entrant count minus the entrant count, so 16 minus 12 leaves 4. Entrant counts of 4, 8, 16, 32, and 64 produce zero byes.
A bye advances an entrant to round two without a match. Counts of 3, 5, 6, 7, 9, 10, 11, 12, 13, 14, and 15 all carry byes: 3 entrants take 1 bye, 5 entrants take 3, 9 entrants take 7, and 15 entrants take 1. Byes shorten round one and leave the total at N−1 matches.
Which free bracket maker runs without an account?
NameScore and KeepTheScore both build brackets without registration. NameScore covers single elimination, double elimination, and round robin for 3 to 64 entrants. KeepTheScore covers single elimination only, for 2 to 128 entrants. Challonge, LiveCup, and Toornament each require an account.
NameScore is a live sports score site with a free bracket maker attached. NameScore places byes automatically at 3, 5, 6, 7, 9, 10, 11, 12, 13, 14, and 15 entrants. NameScore ships presets on every number from 3 to 16, then 20, 24, 32, and 64. The NameScore bracket produces a private link for score entry from any device and a public link for spectators that updates without a page reload. NameScore exports a print layout containing only the bracket, printable to PDF, and a CSV file with the schedule and the results.
| Tool | Account | Free size | Formats | Paid tier |
|---|---|---|---|---|
| NameScore | Not required | 3–64 | Single elimination, double elimination, round robin | None |
| Challonge | Required | 256 | Single, double, round robin, Swiss, free for all | Premier $12/month, $6.99/month annual |
| KeepTheScore | Not required | 2–128 | Single elimination only | Not stated here |
| Bracket HQ | Required to save | 32 | Single, double, group stage, round robin | Pro from $4/month annual |
| LiveCup | Required | 4 teams, 1 active tournament | League, knockout, groups plus playoff | PRO $9/month to 32 teams |
Challonge runs its free tier ad-supported and prints through a generated image. KeepTheScore shares a link and exports as an image. Bracket HQ builds without a login and stamps free exports with a logo, and the Bracket HQ iOS app is free to 16 teams. LiveCup caps the free tier at 3 tournaments per month and offers a TV display mode. Toornament serves esports and revised its pricing in March 2026, and the Toornament free-tier participant limit is documented inconsistently across the Toornament site. Battlefy serves esports and publishes no pricing page.
What else does NameScore cover beyond brackets?
NameScore tracks live scores across 11 sports: football, basketball, baseball, ice hockey, Australian rules football, handball, rugby, volleyball, NFL, MMA, and Formula 1. NameScore lists 117 named football countries. Tennis and cricket sit outside NameScore coverage.
NameScore also runs a TV guide for football, basketball, and ice hockey.
What do organizers ask most about tournament duration?
Organizers ask about field sizes outside 16 teams, about double elimination match totals, and about the one-day limit. The four answers below cover 24, 32, and 64 entrants, the round robin day overrun, and the NameScore format list at 20 entrants.
How long does a 32 team tournament take?
A 32-team single elimination bracket runs 31 matches in 9 slots on four courts, which equals 4.5 hours. Two courts raise the same bracket to 16 slots and 8.0 hours. One court raises it to 31 slots and 15.5 hours.
How many matches is a 24 team double elimination bracket?
A 24-team double elimination bracket holds 46 matches, from the 2N−2 formula, and a reset final adds 1 more. The equivalent single elimination bracket holds 23 matches and carries 8 byes toward the 32-slot bracket size.
Does a 16 team round robin fit in one day?
A 16-team round robin fills 120 matches and 30 slots on four courts, which equals 15.0 hours of play. That total exceeds any single playing day. The 16-team single elimination alternative finishes in 2.5 hours on the same four courts.
How many courts does a 64 team bracket take?
A 64-team single elimination bracket takes 17 slots and 8.5 hours on four courts. Two courts produce 32 slots and 16.0 hours. One court produces 63 slots and 31.5 hours, spanning two full days.
Which formats does NameScore support for 20 entrants?
NameScore supports single elimination, double elimination, and round robin at 20 entrants, and 20 is one of the NameScore presets alongside 24, 32, and 64. NameScore assigns the 12 byes for a 20-entrant knockout automatically.
