Roulette payouts look simple on the surface — bigger risk, bigger reward — but the actual numbers behind each bet type vary more than most players realize. The Roulette Payout Calculator lays out the exact payout, odds, and house edge for every standard bet.
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From a single straight-up number paying 35 to 1, down to an even-money red/black bet paying just 1 to 1, every roulette bet trades win probability for payout size in a very specific, calculable way.
This tool also separates European (single-zero) and American (double-zero) wheels, since the extra pocket on American wheels quietly doubles the house edge without changing any advertised payout odds.
📊 How to Use the Roulette Payout Calculator
Start by selecting your wheel type. This single choice affects your win probability and house edge on every bet, even though the payout odds themselves stay identical across both wheels.
Payout odds don’t change between European and American wheels — the extra pocket only affects your win probability and house edge, not what a winning bet actually pays.
Choose the specific bet type you’re placing, from a single-number straight bet up to a broad even-money outside bet, then enter your stake to see the full breakdown.
🔢 Calculator Fields Explained
Wheel Type – European (37 pockets) or American (38 pockets), which determines win probability and house edge.
Bet Type – the specific inside or outside bet being placed, from Straight Up through even-money bets.
Bet Stake – the amount wagered on this specific bet.
💰 Understanding the Results
| Result | What It Tells You |
|---|---|
| Payout Odds | The fixed ratio this bet type pays if it wins |
| Gross Return | Total amount received back, stake included, on a win |
| Net Profit If Hit | Winnings only, excluding your original stake |
| Win Probability | Chance this specific bet wins on a single spin |
| House Edge | The casino’s structural mathematical advantage on this wheel type |
| Expected Value | Average result per spin if repeated many times, factoring in both outcomes |
Expected value is the most useful number for understanding long-run performance, since it combines payout size and win probability into a single figure rather than looking at either in isolation.
Every roulette bet type carries a negative expected value — the house edge exists on every single bet, not just the “riskier” ones.
A straight-up bet and an even-money bet have wildly different payout odds but nearly identical expected value on the same wheel.
📐 Calculation Formulas
| Bet Type | Numbers Covered | Payout Odds |
|---|---|---|
| Straight Up | 1 | 35 to 1 |
| Split | 2 | 17 to 1 |
| Street | 3 | 11 to 1 |
| Corner | 4 | 8 to 1 |
| Six Line | 6 | 5 to 1 |
| Column / Dozen | 12 | 2 to 1 |
| Red/Black, Odd/Even, High/Low | 18 | 1 to 1 |
Notice how payout odds scale roughly in proportion to how few numbers a bet covers, but not exactly — this small mismatch is precisely where the house edge lives on every bet type.
If roulette payouts were perfectly proportional to true odds, the house edge would be zero — the small gap between payout odds and true win probability is the entire business model.
This is true across both wheel types, but the gap is larger on American wheels because the extra zero pocket increases the denominator in every win-probability calculation without adjusting any payout odds upward to compensate.
📝 Practical Examples
Example 1: A player bets $10 straight up on European roulette. A win pays $360 gross ($350 net profit), but the true win probability is only 1 in 37, giving a negative expected value despite the large payout.
Example 2: The same $10 bet placed on an even-money outside bet (say, Red) pays just $20 gross ($10 net profit) but wins much more often — roughly 18 times in 37 spins on average.
Despite wildly different payout sizes, straight-up and even-money bets carry almost identical expected value on the same wheel — the house edge is nearly uniform across bet types.
Example 3: Switching Example 1’s straight-up bet to an American wheel keeps the $360 payout identical, but win probability drops slightly (1 in 38 instead of 1 in 37), pushing expected value further negative.
Across all three examples, the wheel type consistently matters more to long-run expected value than the specific bet type chosen.
💡 Tips & Best Practices
Always check whether a table is European or American before assuming a bet’s expected value — the difference is small per spin but compounds meaningfully over a long session.
Don’t assume “safer” even-money bets have a better house edge than “riskier” straight-up bets. On a standard wheel, nearly every bet type carries an almost identical house edge.
Use this calculator to compare stake sizes across bet types when deciding how to structure a session bankroll, since gross return and net profit scale directly with stake.
Watch for rare variants like European roulette with “en prison” or “la partage” rules, which slightly reduce the effective house edge on even-money bets specifically — not covered by this general calculator.
Comparing expected value across bet types on the same wheel, rather than payout size alone, gives a clearer picture of what you’re actually risking.
Recalculate whenever you switch tables, since some casinos mix European wheels with American-style payout rules or vice versa in less common regional variants.
⚠️ Common Mistakes to Avoid
Assuming Higher Payout Odds Mean Worse Value
A 35 to 1 straight-up bet looks far riskier than a 1 to 1 even-money bet, but the underlying expected value is nearly identical on the same wheel.
Assuming payout size alone reflects a bet’s relative value is a fundamental misunderstanding of how roulette house edge actually works.
Always compare expected value or house edge directly, rather than judging a bet purely by how large its payout looks.
Ignoring the Difference Between Wheel Types
Payout odds stay the same on European and American wheels, which can create a false impression that the two are equivalent.
The extra double-zero pocket on American wheels roughly doubles the house edge compared to European wheels, even though nothing about the advertised payouts changes.
Confusing Gross Return With Net Profit
Gross return includes your original stake coming back to you; net profit does not.
Treating gross return as pure winnings overstates actual profit and can lead to miscalculated bankroll tracking.
Always check which figure a payout table is actually reporting before comparing bets or building a bankroll plan. Confusing gross return with net profit is a common source of overestimated winnings.
🎯 When to Use This Calculator
Use this tool before sitting down at any roulette table to understand exactly what each bet type pays, how often it wins, and what the underlying house edge actually is on that specific wheel.
Every roulette bet looks different on the felt, but underneath, almost all of them are pricing the same house edge in different-sized packages.
It’s also useful for quickly comparing European versus American tables side by side before choosing where to play, since the difference in long-run expected value can be substantial.
🔗 Related Calculators
Roulette Call Bets Calculator, Roulette Neighbours Calculator, European vs American Roulette Calculator, House Edge Calculator, Bankroll Management Calculator
📖 Glossary
Payout Odds – the fixed ratio a bet type pays relative to stake if it wins.
Gross Return – the total amount received back on a win, including the original stake.
Net Profit – winnings only, excluding the returned stake.
Win Probability – the mathematical chance a given bet wins on a single spin.
House Edge – the built-in mathematical advantage the casino holds on a given wheel type.
Expected Value – the average result per bet over a large number of repeated spins.
European Wheel – the single-zero, 37-pocket roulette wheel.
American Wheel – the double-zero, 38-pocket roulette wheel.
Inside Bet – a bet placed directly on numbers within the main betting grid.
Outside Bet – a bet placed on broader categories like color, parity, or range.
❓ Frequently Asked Questions
Why does an American wheel have a worse house edge than a European wheel?
The American wheel adds a second zero pocket, increasing the total number of possible outcomes from 37 to 38 without adjusting any payout odds to compensate.
This single extra pocket roughly doubles the house edge on every bet type, from about 2.7% on European wheels to about 5.26% on American wheels.
Is a straight-up bet actually riskier than an even-money bet?
In terms of variance, yes — a straight-up bet wins far less often but pays far more, creating bigger swings. In terms of expected value, though, both carry an almost identical house edge.
A player betting many straight-up numbers over a long session will see similar long-run results, proportionally, to one betting the same total amount on even-money bets.
Do all inside bets have the same house edge?
On a standard European or American wheel, yes — Straight, Split, Street, Corner, and Six Line bets all carry essentially the same house edge, since their payout odds are calibrated proportionally to their coverage.
The one common exception is the “top line” bet on American wheels (0, 00, 1, 2, 3), which carries a slightly higher house edge than other inside bets — not covered by this general calculator.
Does bet size affect house edge or expected value percentage?
No — house edge is a fixed percentage regardless of stake size. Doubling your bet doubles both your potential profit and potential loss, but the underlying percentage edge against you stays the same.
House edge is a rate, not a fixed dollar amount, so it applies proportionally at any stake size.
Can I use this calculator for online roulette specifically?
Yes — standard online roulette variants use the same payout odds and wheel structures as physical casino wheels, so the calculations here apply directly as long as you select the correct wheel type.
Some live-dealer or specialty online variants add side bets or rule variations not covered here, so always check the specific game’s rules for anything beyond standard European or American roulette.
⚖️ Legal Disclaimer
This calculator is provided for educational and informational purposes only. It calculates theoretical payout odds, probability, and expected value for standard roulette bet types and does not guarantee any specific outcome. Please gamble responsibly and within your means.
