How Many Matches in a Tournament? Calculator for Every Format and Team Count
The number of matches in a tournament depends on two things: how many teams you have and what format you're using. A 16-team single elimination bracket has 15 matches. A 16-team round-robin has 120. The difference matters for scheduling, venue booking, and how long your event will take.
Here's the exact match count for every major format and team count.
Single elimination
Formula: N - 1 matches (where N is the number of teams).
Every team except the champion loses exactly once, so the total is always one less than the number of teams. This holds true regardless of byes.
| Teams | Matches |
|---|---|
| 4 | 3 |
| 6 | 5 |
| 8 | 7 |
| 10 | 9 |
| 12 | 11 |
| 16 | 15 |
| 20 | 19 |
| 24 | 23 |
| 32 | 31 |
| 64 | 63 |
Single elimination is the fastest format by far. For a detailed breakdown, see our single elimination guide.
Double elimination
Formula: 2(N - 1) to 2(N - 1) + 1 matches.
In double elimination, every team must lose twice to be eliminated. The bracket splits into a winners bracket and a losers bracket. The exact count depends on whether the team coming from the losers bracket wins the grand final — if they do, a reset match is played (hence the +1).
| Teams | Matches (min) | Matches (max) |
|---|---|---|
| 4 | 6 | 7 |
| 6 | 10 | 11 |
| 8 | 14 | 15 |
| 10 | 18 | 19 |
| 12 | 22 | 23 |
| 16 | 30 | 31 |
| 20 | 38 | 39 |
| 24 | 46 | 47 |
| 32 | 62 | 63 |
| 64 | 126 | 127 |
Double elimination roughly doubles the match count compared to single elimination, but it gives every team a second chance. See our double elimination guide for the full structure.
Round-robin
Formula: N x (N - 1) / 2 matches.
Every team plays every other team exactly once. This is a single round-robin. For a double round-robin (home and away), multiply by 2.
| Teams | Matches (single) | Matches (double) |
|---|---|---|
| 4 | 6 | 12 |
| 6 | 15 | 30 |
| 8 | 28 | 56 |
| 10 | 45 | 90 |
| 12 | 66 | 132 |
| 16 | 120 | 240 |
| 20 | 190 | 380 |
| 24 | 276 | 552 |
| 32 | 496 | 992 |
| 64 | 2,016 | 4,032 |
Round-robin is the fairest format because every team plays the same opponents, but the match count grows fast. At 16 teams, you're already looking at 120 matches for a single round-robin. For more detail, see our round-robin guide.
Groups + knockout
The match count for groups + knockout depends on the number of groups, the size of each group, and how many teams advance to the knockout phase. Here are three common setups:
8 teams: 2 groups of 4, top 2 advance to semifinals
| Stage | Matches |
|---|---|
| Group A (round-robin) | 6 |
| Group B (round-robin) | 6 |
| Semifinals | 2 |
| Final | 1 |
| Total | 15 |
16 teams: 4 groups of 4, top 2 advance to quarterfinals
| Stage | Matches |
|---|---|
| Group stage (4 groups x 6 matches) | 24 |
| Quarterfinals | 4 |
| Semifinals | 2 |
| Final | 1 |
| Total | 31 |
32 teams: 8 groups of 4, top 2 advance to Round of 16
| Stage | Matches |
|---|---|
| Group stage (8 groups x 6 matches) | 48 |
| Round of 16 | 8 |
| Quarterfinals | 4 |
| Semifinals | 2 |
| Final | 1 |
| Total | 63 |
Groups + knockout balances fairness (the group stage) with excitement (the knockout bracket). See our multi-stage tournament guide for setup details.
Swiss
Formula: (N / 2) x R matches per round, where R is the number of rounds.
In a Swiss tournament, every round pairs teams with similar records. No one is eliminated, but you play fewer rounds than a full round-robin. The typical number of rounds is between 4 and 6, depending on the team count.
| Teams | Rounds (typical) | Matches per round | Total matches |
|---|---|---|---|
| 4 | 3 | 2 | 6 |
| 6 | 4 | 3 | 12 |
| 8 | 4 | 4 | 16 |
| 10 | 4 | 5 | 20 |
| 12 | 5 | 6 | 30 |
| 16 | 5 | 8 | 40 |
| 20 | 5 | 10 | 50 |
| 24 | 5 | 12 | 60 |
| 32 | 5 | 16 | 80 |
| 64 | 6 | 32 | 192 |
Swiss is a good middle ground between round-robin and elimination: significantly fewer matches than round-robin, but everyone plays every round. See our Swiss format guide for the full explanation.
Master comparison table
Here's the total match count across all formats for common team counts:
| Teams | Single elim | Double elim (min-max) | Round-robin | Groups + KO | Swiss (typical) |
|---|---|---|---|---|---|
| 4 | 3 | 6-7 | 6 | — | 6 |
| 6 | 5 | 10-11 | 15 | — | 12 |
| 8 | 7 | 14-15 | 28 | 15 | 16 |
| 10 | 9 | 18-19 | 45 | — | 20 |
| 12 | 11 | 22-23 | 66 | — | 30 |
| 16 | 15 | 30-31 | 120 | 31 | 40 |
| 20 | 19 | 38-39 | 190 | — | 50 |
| 32 | 31 | 62-63 | 496 | 63 | 80 |
Groups + KO values assume groups of 4 with the top 2 advancing. Swiss values use typical round counts (3-6 rounds depending on size). A dash means the format isn't commonly used at that team count.
Why match count matters
Knowing your match count upfront helps with three things:
Scheduling. If each match takes 30 minutes and you have 28 matches on one court, that's 14 hours of play. Two courts cut it to 7. You need to know this before you book anything.
Venue and resources. More matches means more court time, more referees, and more equipment. The difference between 15 matches (single elimination with 16 teams) and 120 matches (round-robin with 16 teams) is enormous.
Participant experience. In single elimination, half the teams play just one match. In round-robin, everyone plays the same number. The format you choose determines whether teams feel they got their money's worth.
If you're unsure which format fits your event, our format comparison guide walks through the trade-offs.
Ready to plan your tournament? Create your bracket on Score7 — it handles the math, scheduling, and bracket generation automatically. No sign-up required.