Single zero
There are 37 pockets. A straight-up number wins 1/37 while the 35:1 payout plus returned stake accounts for only 36 units.
The expected loss is one unit per 37 wagered, or about 2.70%, on standard bets.
Double zero
There are 38 pockets, but standard payouts remain unchanged. The two house pockets produce an edge of 2/38, or about 5.26%.
The five-number basket 0-00-1-2-3 pays 6:1 and has a still higher edge of about 7.89%.
Triple zero
Adding a third house symbol creates 39 pockets. Standard 35:1, 2:1, and 1:1 payouts then retain three units per 39 wagered on average, or about 7.69%.
A low table minimum does not compensate mathematically for the higher percentage unless the smaller wager materially reduces total action.
Practical comparison
Compare expected hourly cost using actual wager size, pace, and edge. A $5 single-zero bet can cost less in theory than a $25 double-zero bet despite the better wheel being the main percentage choice.
Electronic and live-dealer interfaces should still disclose the wheel and rules used.
Practical checklist
- Prefer fewer green pockets
- Avoid the American five-number bet
- Compare minimums using expected cost
- Verify electronic wheel rules
- Do not confuse recent numbers with wheel quality
Rules, probabilities, and payouts apply only to the model stated on this page. Posted casino rules control when they differ. Last reviewed September 20, 2026.