Brackets by Dimers: 70+ Complete College Basketball Brackets, Completely Free

Dimers has run thousands of simulations to create our most optimized brackets ever, and for the first time, we’re giving them away—completely free. Whether you want the most accurate bracket, a custom bracket where your favorite team wins it all, or a bracket built around picking upsets, our data-based brackets have everything you need. 

• 70+ Complete Brackets based on expert simulations
• Optimized for accuracy, but built for different styles of pools 
• Free to download—no paywall, no signup required 

Get your 2025 bracket today and build your best entry!

If you've stumbled upon this page without any knowledge of either March Madness or the NCAA Tournament (they're the same thing, by the way), first of all — welcome! You've landed in a safe, judgment-free zone full of knowledgable experts looking to help. 

More importantly, though, you have nothing to fear. Whether you're participating in an office pool at your new job, looking for bragging rights against your college roommates, or simply hoping to better understand the insanity of the NCAA Men's Division I Basketball Tournament, Dimers is here to help.

March Madness is a 68-team, single-elimination showdown featuring 32 automatic bids and 36 at-large teams. With 67 games, including the First Four play-ins, the action is nonstop. (Hence the "Madness")

Your goal is simple — pick the winner of each matchup and predict the last team standing.

The tournament is split into four regional brackets, each stacked with 16 teams seeded from No. 1 to No. 16. The highest seeds face off against the lowest, and the bracket stays locked in place—no re-seeding after each round.

Perfection is a pipe dream, and even the most die-hard college basketball fans struggle to pick the eventual champion. So when your bracket inevitably busts, just roll with it—you're in good company.

Download your free 2025 bracket today and have fun!

Dimers has provided 70+ custom March Madness brackets, covering a wide range of teams and employing varying levels of risk & betting strategy, free of charge. Why so many though?

Well, partly because we simply love data. We believe that by harnessing the power of predictive analytics, we make sports betting and gaming more accessible, and ultimately more fun. Basically, we're nerds.

The other is more practical — there are many different types of tournament pools, and each individual is looking for something unique when it comes to their bracket. 

Are you an unapologetic homer holding out hope that your alma mater can pull off the ultimate Cinderella story? We're happy to entertain your delusion.

Are you a risk-prone thrill seeker that lives for the chaos and upsets that inevitably occur in every NCAA Tournament, and want a bracket that matches your energy? We've got you covered.

Or are you out for office bragging rights and want to compile the most comprehensive, data-driven bracket likely to take home the company's grand prize? Again, we've got what you're looking for. 

More than 70 custom brackets, free of charge. Download now!

At Dimers, we’re dedicated to delivering reliable sports predictions powered by cutting-edge tech and data-driven insights. Our team of data scientists and machine learning pros has built proprietary models that tap into the latest advancements in AI, machine learning, and simulation techniques to break down every game with precision.

We start with collecting massive amounts of data—from historical stats to live, in-game updates at both the team and player level. Some of this data comes from external sources, while other key metrics we track ourselves. We then apply advanced statistical analysis to uncover patterns, pinpoint critical variables, and refine our predictive models.

Our models process thousands of data points and weigh every possible factor—team and player performance, weather, starting lineups, home vs. away trends, projected minutes, and more. The result? Data-backed insights that help you make sharper picks with confidence.