The math every serious player runs before sitting down — equity, variance, and bankroll — free and instant, from the team behind the Stacker session tracker.
Exact Texas Hold'em win odds for any matchup — up to 6 hands, preflop to river, enumerated or Monte Carlo.
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Downswing simulatorSimulate 1,000 runs of your win rate. See realistic downswings, confidence intervals, and how swingy your results can get.
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Risk of ruinRisk-of-ruin based bankroll requirements for your exact win rate, stakes, and risk tolerance — not a rule of thumb.
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Stacker calculates your real win rate, standard deviation, and bankroll automatically from your sessions — the numbers this calculator asks you to guess.