Roulette has the widest variety of betting options of any casino game — inside bets, outside bets, neighbour bets, announced bets, call bets, complete bets. This calculator handles all of them. Enter the bet type, the amount, and the roulette variant (European, French, American) and you'll see the probability of winning, the payout, the expected return, and the house edge for that specific bet.

French Roulette with La Partage rule reduces the house edge on even-money bets to 1.35% — half the edge of standard European Roulette. American Roulette (with the 00 slot) has a house edge of 5.26% on every bet. Always choose European or French over American when available. The bet you make doesn't change the house edge in standard roulette — but in French Roulette with La Partage, even-money bets get the reduced 1.35% edge.

There is no betting system that overcomes the house edge in roulette. Martingale, Fibonacci, D'Alembert — all fail in the long run because each spin is independent and the house edge is fixed. The only winning strategy is selective play: only play when you have a bonus with positive expected value, and cash out any significant wins rather than riding variance. See our roulette guide for the maths in detail.