Exact pay-table tool
Side-bet EV calculator.
Convert a complete set of equally likely outcomes and net payouts into expected value, RTP and house edge.
OutcomeWinning combinationsNet payout to 1
121 winning · 879 losing combinations37.900% house edge62.100% theoretical return
CalculationEV = Σ probability × net result
For a net payout of 10:1, a win contributes +10 units and a loss contributes −1. RTP equals 100% plus the player’s expected value percentage.
Completeness check: include every winning outcome exactly once. Any outcomes not assigned to a winning row are treated as one-unit losses. Correlated events or unequal outcome probabilities require a different model.