With our Roulette Odds Calculator, you can see the true probabilities behind every single bet on the wheel. Choose your bet type, pick the variant (European, French, or American), and get a full breakdown of your odds to win and expected payout.
It is fast, simple, and built to show you what the casino math really looks like. Whether you are betting on red, black, straight-up numbers or dozens, this tool shows your edge—or lack of it.
Use it to plan smarter bets, track risk, and stop guessing.
At the top, select between European or American roulette.
European has 37 pockets (1 zero), while American has 38 (0 and 00) — this affects the odds.
Click on the dropdown or visual buttons to choose a bet:
Inside Bets: Straight Up, Split, Street, Corner, Six Line
Outside Bets: Red/Black, Odd/Even, Dozen, Column, etc.
Each option dynamically updates the odds.
Input your bet amount in the box (e.g. £5, £10, etc.).
This allows the calculator to compute the potential payout alongside the probability.
Instantly see:
Payout (e.g. 35:1 for Straight Up)
House Edge
Probability of Winning
Your Winnings if Bet Wins
Adjust your bet type or amount to compare odds.
Great for experimenting with high-risk vs. low-risk betting strategies.
If you want to try your odds in real games, these are the best roulette sites online. All of them are licensed, fair, and packed with live and RNG roulette tables in multiple formats.
Calculating roulette odds is very important. A student study found out that the game of roulette is more than just chance. In his thesis for UNLV, he pointed out how even slight deformities in the roulette wheel give you certain possibilities (such as the ball being more likely to land on the opposite side of where it was spun).
In online roulette, however, there are no such possibilities. It is purely RNG-based. At the same time, if it is a live dealer table on an online casino site, then these possibilities exist. In short, it is too unpredictable—and the only thing that you can predict in some way is knowing the odds using a proper roulette calculator.Because roulette can fool you. Just because black came up five times does not mean red is “due.” A roulette odds calculator strips out those myths and gives you raw data. It helps you understand how likely each bet is to hit and what the payout will be.
It is so important to learn the odds because the house always has an edge—and knowing that edge keeps you sharp. Whether you are placing an even-money outside bet or going for a single number straight-up, each choice has different odds and expected return.
Learn them. Avoid bad bets.
Let us talk about the various advantages and shortcomings of using a roulette odds payout calculator. The idea is to use it to get smarter, not to feel invincible.
Shows true probabilities for every type of roulette bet
Does not predict outcomes (roulette is still random)
Instant results for European and American wheels
Cannot influence results or tilt odds in your favour
Great learning tool for beginners and casual players
Might slow down fast-paced live games if used mid-play
Helps manage bankroll by understanding risk and reward
No use for automated or strategy-free gameplay (like autoplay spins)
Busts myths like the gambler’s fallacy
This calculator will not rig the wheel in your favour. It just shows the facts. Roulette is pure chance. Always play within your limits. Use tools like this to understand your bets, not to chase unrealistic wins.
Remember that you need to know the numbers and always stay in control.
Here are some common questions players ask when they start using a roulette odds calculator.