House Edge Calculator - What a Casino Game Really Costs You
House edge is a price per wager, not a one-time fee: expected loss = edge x total wagered. It grows linearly with every round - the faster you play, the more you pay for the same entertainment.
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Session risk - will this bankroll survive?
Expected loss is an average; this models the spread around it. Needs the full game model (win chance + total payout), because RTP alone says nothing about variance. Flat bets, exact binomial end-of-session math.
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Reference edges
Provably-fair dice / originals: ~1%. Baccarat (banker): 1.06%. European roulette: 2.7%. Slots: typically 2-6% edge (RTP 94-98%). American roulette: 5.26%. Keno: often 20%+. The lesson is not "never play" - it is that edge x volume is the real price of the entertainment, and low-edge games buy you far more playtime per dollar. Compare per-casino edges in our comparison table →