Roulette Odds Calculator
See the true probability, payout and house edge of any roulette bet, European or American.
Payouts are fixed casino payouts; the house edge is the gap between those and the true odds. On a European wheel it's about 2.7% on almost every bet; on an American wheel about 5.26%.
Why this matters
This tool is here to help you understand the maths, not to help you win — because no tool can. Every casino game is built with a house edge, and understanding it is the single most useful thing a player can do.
Play responsibly
Gambling should be a form of entertainment, never a way to make money. Because the house always has a mathematical edge, over time the odds favour the casino — so only ever play with money you can comfortably afford to lose, and set limits before you start.
If gambling stops being fun, free and confidential support is available in most countries — search for your national gambling helpline or an organisation such as GambleAware. This site is for education only and is intended for adults aged 18+.
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