Roulette bets differ mainly in how often they hit and how much they pay. A straight-up wager covers one number and lands rarely for a large 35-to-1 payout; red or black covers 18 numbers and wins much more often for an even-money return. On a standard single-zero wheel, both retain the same 2.70% house edge under ordinary rules. The practical difference is variance: how unevenly wins and losses arrive.
This guide uses the 37-pocket single-zero game described in the Nevada Gaming Control Board live-roulette rules and checks its calculations against Wizard of Odds roulette analysis. A real table can apply different rules, limits or short pays, so its live paytable always takes priority.
Inside and outside bets
Inside bets are placed on the numbered grid and normally cover one to six numbers. Outside bets cover larger groups such as a dozen, column, colour, parity or high/low range. The names describe layout position, not whether one group is mathematically “better.”
| Bet | Numbers covered | Standard payout | Single-zero hit rate |
|---|---|---|---|
| Straight | 1 | 35 to 1 | 2.70% |
| Split | 2 | 17 to 1 | 5.41% |
| Street | 3 | 11 to 1 | 8.11% |
| Corner | 4 | 8 to 1 | 10.81% |
| Six line | 6 | 5 to 1 | 16.22% |
| Dozen or column | 12 | 2 to 1 | 32.43% |
| Red/black, odd/even, 1–18/19–36 | 18 | 1 to 1 | 48.65% |
The hit rate is simply covered numbers divided by 37. It does not include a push unless the table explicitly offers a rule such as en prison.
Why the house edge stays the same
Standard payouts are set one unit below fair odds because the zero creates an extra losing pocket. A straight would pay 36 to 1 at fair odds on a 37-pocket wheel, but it pays 35 to 1. An 18-number even-money bet wins on 18 pockets and loses on 19. In both cases, the expected result is a loss of one unit per 37 units wagered, or about 2.70%.
Changing from red to a single number therefore changes the distribution of outcomes, not the expected loss per unit. Combining several standard bets also does not remove the edge. It changes coverage, total stake and the size of different outcomes.
Hit rate is not return
A higher hit rate can feel safer because more spins produce a win, but the return is smaller. On red, a winning one-unit wager earns one unit; on a straight, it earns 35. Neither figure says what will happen during a short session. A run of losses remains possible on every bet type, including even-money bets.
Variance in practical terms
- Low coverage: more losing spins, occasional larger payouts and sharper balance swings.
- Medium coverage: streets, corners and lines sit between the extremes.
- High coverage: more frequent smaller wins, but zero and uncovered numbers still create losing spins.
Variance does not make the house edge disappear. It describes the route results take around the same long-run expectation. A player who dislikes long losing sequences may prefer broader coverage, but that is a comfort choice rather than a profit strategy.
Single zero, double zero and special rules
| Wheel or rule | Typical edge on standard bets |
|---|---|
| Single zero | 2.70% |
| Double zero | 5.26% |
| Triple zero | 7.69% |
| Single zero with la partage on even-money bets | 1.35% on eligible bets |
Wheel type usually matters more than choosing one standard bet shape over another. Short-pay games can be worse again: a straight paying 34 to 1 instead of 35 to 1 raises the edge. Always inspect the zeros and payout table before staking.
Common misunderstandings
- “Outside bets beat inside bets”: they hit more often but normally keep the same edge.
- “Covering most numbers is almost certain profit”: the uncovered pockets and zero can create a loss larger than frequent small wins.
- “A number is due”: previous spins do not change the probability of the next independent spin.
- “More chips mean more chances for free”: every additional chip increases the total amount exposed.
Progression systems do not fix those facts. Our separate roulette betting-systems analysis explains why changing stake size cannot change the wheel probabilities.
A responsible selection checklist
- Prefer a single-zero wheel when available.
- Check that standard payouts are not shortened.
- Choose coverage according to acceptable swings, not a promise of profit.
- Calculate the total stake across every chip before spinning.
- Set session time and loss limits in advance.
Current live tables can be compared in the verified CasinOK live-casino section. CasinOK Casino treats roulette selection as a probability and budgeting decision, never as a way to guarantee a win.
Bottom line
Inside and outside bets trade hit frequency against payout size. On a normal single-zero layout, straight, split, street, corner, line, dozen, column and even-money wagers all carry the same standard 2.70% edge. Choose the wheel rules first, then select a bet shape whose variance fits a fixed entertainment budget.
