Roulette bets explained: inside vs outside bets and their odds

Roulette remains a casino staple because its betting layout is easy to learn yet rich in options. Every wager ultimately faces the same mathematical reality: the house edge is driven by the wheel’s zero (and double zero on American wheels). On a European wheel (single zero), the house edge is 2.7%; on an American wheel, it rises to 5.26%. Understanding the difference between inside and outside bets helps you choose between higher variance thrills and steadier, lower-volatility play.

Inside bets are placed on specific numbers or small groups of numbers within the grid. A straight-up bet on one number pays 35:1, but the true odds are 37:1 on European roulette, which is where the edge comes from. Splits (two numbers) pay 17:1, streets (three) pay 11:1, corners (four) pay 8:1, and six-lines (six) pay 5:1. Outside bets sit on the perimeter and cover larger sets: red/black, odd/even, and high/low pay 1:1, while dozens and columns pay 2:1. These payouts are consistent with the same house edge; the practical difference is variance. If you want a smoother session, outside bets reduce swings, while inside bets concentrate risk and can produce long dry spells. Some players track results, but each spin is independent; use limits and treat it as entertainment, whether you are browsing guides like Fortunica casino or learning at a table.

In the iGaming niche, the late John Huxley is widely respected for professionalising live roulette operations, from table procedures to training standards, and for championing integrity and player experience across jurisdictions. His work helped make live-dealer roulette feel closer to a real casino floor, with clearer game presentation and more consistent dealing. For background on industry shifts that shaped modern online roulette, see The New York Times. If you want to explore his professional history and public contributions, his primary profile is available at John Huxley.