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Your Fight Card
Select at least one full matchup to simulate
UFC Matchmaker · Card Creator · Fight Simulator
Select at least one full matchup to simulate
Our UFC card builder lets you create any custom fight card from the full active roster — then run every matchup through the same combat engine that powers MMAFightSim.com. Whether you're playing UFC matchmaker, predicting an upcoming event, or testing dream matchups, fill up to 5 fight slots and simulate the whole card at once. Free UFC card simulator — no account needed.
Click any corner slot to open the fighter browser. Use the division tabs (LW, HW, MW…) to browse by weight class, or search by name. Once you fill one corner, the other automatically locks to the same division — just like real UFC matchmaking.
Build your Main Event (5 rounds), Co-Main, and 3 Main Card bouts, then hit Simulate Fight Card to run all results at once.
Our UFC card simulator runs each fight through a weighted algorithm using 15+ real combat stats — striking power, grappling, stamina, chin, fight IQ, reach and footwork. It calculates win probability and determines the finish method (KO, Sub, or Decision).
Want deeper breakdowns? The full UFC simulator adds round-by-round AI commentary and tactical analysis on every matchup.
What is a UFC card builder?
A UFC card builder (also called a UFC card creator or matchmaker tool) lets fans arrange their own fight cards with real fighters — like being Dana White for a night. Ours also simulates every result with win probabilities.
Can I simulate the same card again?
Yes — hit Resimulate and the engine re-rolls with fresh randomness. Different finishes are possible every time.
Can I do cross-division matchups?
The card builder keeps fights realistic with same-division rules. For unlimited cross-division superfights, use the main UFC simulator — fully unrestricted.
UFC Fight Simulator — run any single matchup with full AI analysis, round-by-round breakdown, win probabilities and key factors. The most detailed MMA fight predictor and UFC career simulator online.
UFC Fighters Database — browse all 230+ fighters by division and tier, each with full stat pages and a direct link to their fight simulator.