Rex says
The fast lane for the math you almost remember from school. Type the numbers, get the answer, move on with your day.
Try a scenario
Click to load — tweak from there.Inputs
Result
Total matches
94
Estimated event length (hours)
3.5
Rounds in the bracket
6
Byes needed
16
Total minutes
212
Psst — share this and help Rex grow
One click, a permanent link with your numbers baked in.
How to use this
- 1Enter entrants.
- 2Enter format.
- 3Enter minutes per match.
- 4Enter stations available.
- 5Read your total matches on the right — it updates as you type.
- 6Hit Share to keep the scenario or send it to someone.
About this calculator
Plan an event from entrant count and format. Get bracket size, byes needed, total match count, rounds, and the total hours the tournament will run on your station count.
Worked example
Using the values the calculator loads with:
Inputs
- Entrants: 48
- Format: Double elimination
- Minutes per match: 18
- Stations available: 8
Results
- Total matches: 94
- Estimated event length (hours): 3.5
- Rounds in the bracket: 6
- Byes needed: 16
- Total minutes: 212
What each field means
Inputs
- Entrants
- The entrants used in the calculation. Starts at 48 so you have a working example on load.
- Format
- Pick the option that matches your situation — the maths changes per option. Choices: Single elimination, Double elimination, Round robin.
- Minutes per match
- The minutes per match used in the calculation. Starts at 18 so you have a working example on load.
- Stations available
- The stations available used in the calculation. Starts at 8 so you have a working example on load.
Results
- Total matches
- Returned as a whole number and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Estimated event length (hours)
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Rounds in the bracket
- Returned as a whole number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Byes needed
- Returned as a whole number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Total minutes
- Returned as a whole number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
Why does double elimination take so long?
It roughly doubles the match count so every entrant gets a second life. Budget nearly twice the venue time of single elim.
When does round robin stop being feasible?
Fast. 16 entrants means 120 matches. Pool play into a bracket is the standard compromise above about 8 players.
Accuracy and limitations
- Results are rounded for display; the underlying calculation keeps full precision.
- Very large or very small inputs may hit floating-point limits in the browser.
- Inputs outside the accepted range are clamped rather than rejected.
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Tournament Bracket & Schedule Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/tournament-bracket-size
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/tournament-bracket-size" target="_blank" rel="noopener">Tournament Bracket & Schedule Calculator — RevenueLab</a> (2026).</p>
Source: [Tournament Bracket & Schedule Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/tournament-bracket-size) (2026).