Understanding Roulette

Roulette is one of the oldest and most recognizable casino games. A ball spins around a numbered wheel and lands in one of the pockets. Your job is to predict where it will end up. The simplicity of the concept makes it accessible, but understanding the math behind the bets helps you make smarter decisions about which bets to place.

The critical distinction every roulette player needs to understand is the difference between American and European roulette. American roulette has 38 pockets (numbers 1-36 plus 0 and 00), giving the house a 5.26% edge on almost every bet. European roulette has 37 pockets (1-36 plus a single 0), reducing the house edge to 2.70%. That difference of 2.56% translates to real money over time.

Types of Roulette Bets

Roulette bets fall into two categories: inside bets and outside bets.

Inside Bets

  • Straight Up: A bet on a single number. Pays 35:1. Probability: 2.63% (American) or 2.70% (European).
  • Split: A bet on two adjacent numbers. Pays 17:1.
  • Street: A bet on three numbers in a row. Pays 11:1.
  • Corner: A bet on four numbers forming a square. Pays 8:1.
  • Six Line: A bet on two adjacent rows (6 numbers). Pays 5:1.

Outside Bets

  • Red/Black: Pays 1:1. Nearly a coin flip, with the 0 (and 00) providing the house edge.
  • Odd/Even: Pays 1:1. Same odds as Red/Black.
  • High/Low (1-18 or 19-36): Pays 1:1.
  • Dozens (1-12, 13-24, 25-36): Pays 2:1.
  • Columns: Pays 2:1.

French Roulette and La Partage

French roulette uses the same single-zero wheel as European roulette but adds the La Partage rule: when the ball lands on 0, even-money bets (red/black, odd/even, high/low) lose only half the wager. This cuts the house edge on those bets to just 1.35%, making French roulette the best version of the game for players who stick to outside bets.

Roulette Strategy

No roulette strategy can overcome the mathematical house edge. Betting systems like the Martingale (doubling after losses) or Fibonacci do not change the expected value of your bets. They only change the distribution of your wins and losses. The Martingale system, for example, produces many small wins but exposes you to catastrophic losses when you hit a long losing streak and bump into the table limit.

The smartest approach to roulette is straightforward:

  1. Play European or French roulette whenever available.
  2. Stick to outside bets for the lowest house edge.
  3. Set a session budget and stop when you reach it.
  4. Take profits off the table periodically.

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Frequently Asked Questions

What is the best casino for roulette?
Based on our testing, our top-rated casinos for roulette include Jackit, Wild Casino, and Bovada. Each offers a strong roulette selection with fair odds and smooth gameplay.
Can I play roulette on my phone?
Yes, all of our recommended casinos offer roulette games optimized for mobile browsers on both iOS and Android devices.
Are online roulette games fair?
Yes, when you play at licensed casinos using software from recognized providers. The games use certified Random Number Generators (RNG) that are regularly audited for fairness.