🏆 Tournament Bracket Generator

Enter one participant name per line to instantly generate a randomly-seeded single-elimination bracket. Supports 2 to 128 participants — if your count isn't a power of 2, bye slots are added automatically.

Participants — Bracket Slots (incl. byes) — Bye Slots — Total Rounds —

More Sports & Fitness Calculators Tennis Scorekeeper Climbing Grade Converter Race Time Predictor Swim SWOLF Calculator Bowling Score Calculator Game Sensitivity Converter Bike Gear Ratio Calculator Yoga Pose Hold Timer Cricket Run Rate Calculator

GUIDE

Learn more

How Single-Elimination Brackets Work (Byes, Seeding, Rounds)

In a single-elimination tournament, one loss and you're out, so the number of matches halves every round until only the final remains. To build a clean, symmetrical bracket tree, the participant count needs to be a power of 2 (2, 4, 8, 16, 32, 64, 128); if the real headcount is smaller, the leftover slots are filled with byes. For example, 5 real participants get padded up to a bracket of 8, with 3 bye slots — whoever draws a bye skips round 1 entirely and advances straight to round 2 with no match played.

Random Seeding vs Ranked Seeding — When to Use Each

Random seeding shuffles the bracket without any regard for skill, which is perfect for casual, low-stakes events like office tournaments or friendly meetups where it genuinely doesn't matter who faces whom. Ranked (seeded) placement, by contrast, deliberately keeps top seeds apart in early rounds so the strongest competitors don't eliminate each other before the final — this is standard practice in official competitions and league play. This tool re-shuffles the seed order with a fresh Fisher-Yates shuffle every time you generate or reshuffle, so casual organizers get a genuinely fair random draw on demand.

Frequently asked questions

How are byes decided?

We add just enough bye slots to round the participant count up to the next power of 2, then shuffle all slots (real participants and byes) together at random. Anyone paired against a bye automatically advances to the next round without playing a match.

How many rounds does a bracket need for N participants?

It's the number of times you can halve the smallest power of 2 that fits your participant count. For example, 5-8 participants need 3 rounds (round 1, semifinals, final), while 9-16 participants need 4 rounds.

Can I reshuffle the bracket after generating it?

Yes — click "Reshuffle Seeds" to instantly re-randomize the same participant list into a brand-new bracket. You can also edit the participant list and regenerate at any time.