Playoff Series Probability Calculator
Turns a single-game win probability into the chance of winning a best-of-3, 5 or 7 series (or any first-to-N race), with the full distribution of series lengths and the expected number of games. Shows how longer series amplify the favorite’s edge.
Read the full guide to this tool
Results
Notes
- Assumes independent games with a constant win probability — no home court, momentum or injuries.
- Even a 60% favorite loses a best-of-7 about 29% of the time; upsets are baked into short series.
- Educational estimate for sport and training purposes, not professional coaching or medical advice.
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