Roulette Bet Calculator

Formula for Calculating Roulette Payouts

What Is the Roulette Bet Calculator?

The Roulette Bet Calculator is a free tool that helps you understand the potential outcome of your roulette bets. Whether you’re playing online or at a casino table, this calculator shows you exactly what you can win based on the type of bet you place, the wheel you choose (European or American), and the amount you wager.

It works with standard bet types found in roulette, such as Straight Up, Split, Street, Dozen, and more. It also calculates the house edge, expected value, and odds so you can make better-informed decisions.

Why Use This Calculator?

Roulette is a game of chance, but understanding the numbers behind your bet helps you play smarter. This tool provides quick, clear answers to questions like:

• How much could I win with this bet?
• What are the true odds and house edge?
• Which bets offer better chances over time?

With just a few inputs, you get a full breakdown of your wager's outcome, including payout, profit, and statistical analysis like expected value and probability.

How to Use the Calculator

Follow these simple steps to calculate your roulette bet results:

• Enter your wager amount – Set how much you're betting (e.g., $10).
• Choose the wheel type – Select between European (single 0) or American (0 and 00).
• Select a bet type – Pick from common options like Straight Up, Split, Dozen, etc.
• (Optional) Add custom numbers – You can input specific numbers for your bet.
• Click "Calculate Payout" – Instantly see your potential winnings, true odds, and more.

You can also customize the decimal display or toggle visibility of detailed statistics such as house edge and true odds.

Features at a Glance

• Supports both European and American roulette formats
• Includes all standard bet types
• Calculates payouts, profit, true odds, and probability
• Displays house edge and expected value
• Custom number input for advanced players
• Instant results with a clear visual layout

Understanding the Results

After running the calculation, you'll see a detailed breakdown:

• Potential Payout – Total return including your original bet
• Profit if Won – Your winnings excluding your wager
• Probability – Chance of the bet winning, based on wheel type and coverage
• House Edge – How much the casino keeps on average from this bet
• Expected Value – The statistical average return per $1 bet

Frequently Asked Questions

What’s the difference between American and European roulette?

European wheels have 37 numbers (0–36), while American wheels add a “00” for a total of 38. The extra “00” increases the house edge, making European roulette more favorable to players.

What does house edge mean?

House edge is the average percentage of each bet the casino expects to keep over time. For example, a 2.70% house edge means the casino keeps $2.70 of every $100 wagered.

What is expected value and why does it matter?

Expected value (EV) tells you what you can expect to win or lose per $1 wagered, on average. A negative EV means you’re likely to lose money in the long run, even if you win a few bets.

Can I use this tool for real-money strategy?

Yes. This calculator helps you make more informed betting decisions. It’s especially useful for evaluating high-risk bets or exploring strategies like outside vs. inside bets.

What if I want to bet on specific numbers?

You can enter your own numbers in the input field labeled "Selected Numbers." Just make sure your selection matches the required amount for the chosen bet type (e.g., 2 numbers for a split bet).

Helpful for Every Player

Whether you’re new to roulette or looking to refine your approach, this calculator gives you an edge by showing the math behind every spin. Use it to compare different bets, assess risk, or simply double-check your expectations.

It’s especially handy for planning your strategy, setting betting limits, and understanding the trade-offs between potential reward and probability.