March Madness Bracket Generator

March Madness bracket generator: fill a 64-team bracket with seed-based picks, choose how many upsets you want from pure chalk to coin flips, click any team to force a pick, and print it.

Team and region names
64 lines: region 1 seeds 1 to 16, then region 2 and so on. Leave empty to show seeds only.

At the middle setting, each game uses rough win chances from past tournaments: a 1 seed beats a 16 about 99% of the time, 5 v 12 is close to 65/35 and 8 v 9 is a coin flip. Tap any team to make it the winner; later rounds refill around your pick. This is for office pools and fun, nothing more.

Maths checked by Josh Miller · updated Nov 2026How we calculate →

A March Madness bracket generator fills your 64-team bracket in a second, with as many upsets as you like. Leave the slider in the middle and each game uses rough win chances from past tournaments: 1 seeds beat 16s about 99% of the time, 5 against 12 is roughly 65/35, and 8 against 9 is a coin flip. Slide left for chalk (better seeds always win), right for chaos. Tap any team to make them the winner and the later rounds refill around your pick. It’s free and prints on one sheet.

How the bracket generator picks winners

Each seed has a strength rating, and the chance one team beats another comes from the gap between them. At the middle setting those chances roughly match how the seeds have done historically. In a run of thousands of brackets, a 1 seed wins the title in around 60% of them and something seeded 4 or worse in about 7%, which is about right.

The slider changes how much the rating gap counts. At zero it’s pure chalk. At 100 every game is 50/50, which produces some wonderfully ridiculous Final Fours.

Filling in real teams

Open “Team and region names” and paste 64 team names, one per line: the first region’s seeds 1 to 16, then the second, and so on. Rename the regions to match the year’s bracket. Your picks stay in place when you change names.

Winning a pool

In a big office pool, a pure chalk bracket rarely wins: too many people have the same picks. A couple of well-chosen upsets in the early rounds and a champion that isn’t the most popular 1 seed gives you a better chance of finishing first, even if your average score drops. That’s the same logic as fading the crowd in a survivor pool.

Running the pool? The sweepstake generator draws teams for everyone, and the random name picker settles any tie-breakers.

March Madness is a trademark of the NCAA. This is an independent bracket tool and isn’t affiliated with or endorsed by the NCAA.

Running your own knockout rather than March Madness? The bracket generator builds a seeded or random bracket for 2 to 64 entrants and handles the byes.

Frequently asked questions

How does the bracket generator decide winners?

Each game uses a win chance based on the two seeds, roughly in line with past tournaments, adjusted by the upset slider.

How often does a 12 seed beat a 5 seed?

About 35% of the time historically, which is why it's the most popular first-round upset.

Can I use real team names?

Yes. Paste all 64 in seed order by region and the bracket shows them.

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