How many courts do you need for your tournament?
A simple formula to match your venue to your player count.
Courts and tables are the bottleneck of every tournament. You can have 40 eager players and a full day ahead of you, but if you only have two badminton courts, the maths won’t work—people will spend more time waiting than playing. Figure out the court count before you book a venue, and you won’t end up cramming matches or paying for space you don’t use.
The calculation itself is straightforward once you know your numbers.
What you need to know first
Four things determine how many courts or tables you need:
Player count. How many people are competing? Everything else follows from this.
Tournament format. Different formats produce very different numbers of matches. A round robin with 12 players means 66 matches. A Swiss system with the same 12 players and 4 rounds means 24. That’s a big difference in court time. If you’re still deciding on a format, our tournament formats guide compares them side by side.
Available time. How many hours do you have from first match to final results? Be realistic—subtract time for check-in, breaks, and the gap between rounds.
Average match length. This varies by sport and match format. Best-of-3 takes longer than best-of-1. Competitive players take longer than beginners.
Here are some rough match times to work with:
| Sport | Casual/short format | Competitive/long format |
|---|---|---|
| Badminton | 15–20 min | 25–35 min |
| Table tennis | 10–15 min | 15–25 min |
| Esports (BO1) | 15–30 min | 30–60 min |
These include changeover time between players. If your sport or format is different, use your own estimates—you know your players best.
How many matches will you need?
This depends entirely on your format. Here’s the maths for each:
| Format | Formula | 8 players | 16 players | 24 players |
|---|---|---|---|---|
| Round robin | n×(n−1)÷2 | 28 | 120 | 276 |
| Swiss system (recommended rounds) | n÷2 × rounds | 12 (3 rds) | 32 (4 rds) | 60 (5 rds) |
| Single elimination | n−1 | 7 | 15 | 23 |
| Double elimination | ~2×n−1 | 15 | 31 | 47 |
The differences are huge. That’s why format choice directly affects how many courts you need. A round robin with 16 players produces 120 matches—you’d need a lot of courts or a very long day. A Swiss system with the same players produces 32 matches across 4 rounds, which is far more manageable. For Swiss round counts, our rounds calculator guide explains the logic.
The court formula
Once you know your total matches and average match time, the formula is simple:
Courts needed = (total matches × average match time) ÷ available playing time
Then add 15–20% as a buffer for delays, changeovers, and the occasional match that runs long.
Worked example: 16 players, Swiss system, 4 rounds. That’s 32 matches. Average match time is 20 minutes. You have 3 hours (180 minutes) of playing time.
32 × 20 = 640 match-minutes needed.
640 ÷ 180 = 3.6 courts.
With a 20% buffer: 3.6 × 1.2 = 4.3 → you need 4 courts.
That’s it. The formula works for any sport—just swap in your own match times.
Quick reference: courts by player count
This table assumes 20-minute average matches and 3 hours of playing time. Your numbers may differ, but it’s a useful starting point.
| Players | Round robin | Swiss system | Single elimination |
|---|---|---|---|
| 8 | 4 courts | 2 courts | 1–2 courts |
| 12 | 5 courts | 2–3 courts | 2 courts |
| 16 | 9 courts | 3–4 courts | 2–3 courts |
| 24 | 21 courts | 4–5 courts | 3 courts |
| 32 | — | 5–6 courts | 3–4 courts |
You can see why round robin stops being practical above 16 players unless you split into groups. Swiss and elimination scale much better.
Running courts in parallel
With multiple courts, you run matches at the same time. This speeds things up, but takes a bit of coordination.
Stagger your start times. If all courts start and finish at the same time, you’ll have a rush of results to process before the next round. Starting courts 2–3 minutes apart spreads the workload and keeps things moving.
Plan for uneven finishes. Some matches end quickly, others go the distance. Don’t wait for the slowest court to finish before starting the next round on courts that are free. In Swiss-system events, you do need all results from a round before pairing the next one, but in group stages or round robins, courts can run independently.
Keep it fair. If one court has worse lighting or is near a door with a draft (badminton players know), rotate players across courts rather than keeping them on the same one all day.
Sport-specific space needs
Knowing how many courts you need is one thing. Having enough physical space for them is another.
Badminton courts need side clearance of at least 1 metre between courts and 1.5 metres at the back. A standard court is 13.4m × 6.1m, so with clearance you’re looking at about 15m × 8m per court. Ceiling height matters too—at least 7.5 metres for competitive play, though 5–6 metres works for casual events.
Table tennis tables are smaller but still need room. Allow at least 3 metres behind each end and 1.5 metres on each side. That’s roughly 8m × 4.5m per table. If you’re packing tables close together, put barriers between them so balls don’t roll into the next match.
Esports stations need desk space, power, and network connectivity. Each station typically needs about 1.5m of desk width. What catches people out is power and network—8 gaming PCs on one circuit breaker will trip it. Plan your power distribution before you set up.
What if you don’t have enough courts?
Sometimes you’re stuck with fewer courts than ideal. Here’s how to make it work:
Reduce the number of rounds. In a Swiss system, 3 rounds instead of 4 cuts your total matches by 25%. The rankings are slightly less accurate, but for a casual event it’s a fair trade.
Split into groups. Run two separate round-robin groups of 8 instead of one group of 16. That drops your match count from 120 to 56, and you can run a short knockout phase between group winners at the end.
Shorten the match format. Best-of-1 instead of best-of-3 roughly halves your court time. It’s less satisfying for players, but if you’re tight on space or time, it keeps things moving.
Extend the day. If your venue allows it, starting an hour earlier or finishing an hour later gives you 30–40% more playing time. That alone can drop your court requirement from 5 to 3.
Two real examples
Example 1: Club badminton night, 16 players, 3 courts, 3 hours. Swiss system with 4 rounds = 32 matches. At 20 minutes each, that’s 640 match-minutes. Three courts give you 540 minutes of playing time. That’s tight, so either cut to 3 rounds (24 matches, 480 minutes—fits comfortably) or shorten matches to 15 minutes by playing best-of-1 games.
Example 2: School table tennis event, 24 players, 4 tables, 4 hours. Swiss with 5 rounds = 60 matches. At 15 minutes each, that’s 900 match-minutes. Four tables give you 960 minutes. It fits, but just barely—so keep changeovers quick and have someone dedicated to managing the schedule.
Court count is just one piece of the puzzle. Our tournament planning checklist covers everything else you need to prepare.
Related guides
- Tournament planning checklist – Complete planning guide
- Tournament formats compared – Matches per format
- How many rounds for Swiss? – Swiss round calculation
- Keeping your tournament on schedule – Time management
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