Roulette Odds Calculator
Probability, true odds, payout and house edge for any roulette bet on European, American, French or mini wheels.
Odds Calculator
Change any value — results update instantly.
Expected result = stake × (probability × payout − probability of losing). Negative on every bet — that is the house edge.
How to use the odds calculator
Choose the wheel: European, American, French or Mini.
Pick the bet type from the dropdown.
Enter your stake in CA$.
Read probability, true odds, payout, RTP and the expected result per spin.
Worked example in Canadian dollars
Example. CA$20 on a dozen at a European table: probability 12/37 = 32.43%, true odds 2.08:1, payout 2:1. Expected result per spin: CA$20 × (0.3243 × 2 − 0.6757) = −CA$0.54, which is 2.70% of the stake. On an American wheel the same bet costs −CA$1.05.
About the odds calculator
Roulette odds are simple to state and easy to misjudge. This calculator gives the exact probability of any bet hitting on a 37-pocket European wheel, a 38-pocket American wheel, a French table with La Partage or a 13-pocket mini wheel, alongside the table payout and the gap between them — which is the house edge.
Use it before you sit down at a live table in Canada to check what a bet really costs. A CA$10 red bet on a European wheel loses 27 cents per spin on average; the same bet on an American wheel loses 53 cents. Over a two-hour session at 40 spins an hour, that difference is CA$21.
Put it into practice
Numbers are more useful with a real table in front of you. Practise on our free European wheel. When you are ready to play for real, our top pick for Canadians is Rainbet: code BOOST20 adds a permanent 20% rakeback boost that lowers the effective edge on every spin, which you can see in the rakeback calculator.
FAQ
Is the odds calculator free?
Yes, and it runs entirely in your browser — nothing you type is sent to a server.
Are the results in Canadian dollars?
Every currency figure is in CA$. The maths is identical in any currency; only the label changes.
Where do the house-edge figures come from?
From the payout tables of each wheel: 2.70% single zero, 5.26% double zero, 1.35% French even-money, 7.69% mini. See our house edge guide for the derivation.
