Free bracket builder
Run your tournament like a pro.
Build a tournament bracket in seconds. Single elimination, double elimination, and round robin - seed teams, advance winners, and share a link. No account, right in your browser.
Three formats
Every bracket your event needs.
Single elimination
The classic knockout - lose once and you're out. Free for up to 8.
Double elimination
A losers bracket gives every team a second life before the grand final.
Round robin
Everyone plays everyone, ranked by a live standings table with tiebreakers.
How it works
From team list to champion in three steps.
Paste your teams
Type or paste a list - one per line or comma-separated. Roundra cleans duplicates and blanks.
Pick a format & seed
Choose single, double, or round robin. Seed in order or shuffle for a random draw.
Run & share
Tap winners to advance the bracket, add scores, then print or copy a share link.
Learn
Guides for organizers.
How to make a tournament bracket
A step-by-step walkthrough from team list to crowned champion.
Single vs double elimination
Which knockout format fits your event, and the trade-offs of each.
Round robin scheduler
How round-robin pairings and standings work, and when to use them.
Tournament seeding explained
Why 1 plays 16, how the standard seed order is built, and when to randomise.
Byes in a tournament bracket
How many byes your field needs, who gets them, and what they do to the day.
Group stage into a knockout
Sizing the pools, deciding who advances, and seeding the bracket that follows.
Round robin tiebreakers
How level records are ranked, the order the tiebreakers apply in, and why head-to-head is out.
Best-of series explained
What best-of-3, 5 and 7 mean, and what series play does to your schedule.
Third-place and consolation matches
What each option does, what it costs, and when to switch it on.
How to run a tournament on the day
The organiser's timeline from format choice to the last recorded result.
Templates
Brackets for any team count.
See the exact layout for your field size - rounds, byes, and match counts for every size from 3 to 32 teams, in all three formats.