arrow-up

Roulette Odds Calculator by Roulette77

Play instantly on your device Add Roulette77 in 1 tap, faster play & easy return
Add & Play
Add to Home Screen
Play Roulette Anytime! Add this game to your home screen and enjoy
  • Instant access to the game
  • Track your score in the leaderboard
  • Enjoy full experience in one tap

How Our Roulette Odds Calculator Works

Our roulette odds calculator is easy to use and helps you estimate the probability of winning for selected bets or combinations of bets. It also lets you compare the difference in odds between the two most common versions of the game: European and American roulette. The different number of zero pockets in these versions affects the odds for all bet types.

  1. Choose between the European and American layouts at the top of the frame.
  2. Place chips on the desired areas of the table to add bets to the calculation.
  3. Add more chips if you want to test different combinations or increase the total stake.
  4. If you select the wrong position, click Undo to reverse your last action.
  5. Once all bets are placed, click Calculate and check the result in the Your Odds section.
  6. To clear the table and start a new calculation, use the Clear Bets button.

More Free Roulette Tools

  • Roulette Payout Calculator

    Check the potential payout for your selected bet before you play.

    Calculate Payout
  • Roulette Strategy Tester

    See how different betting systems perform over a large number of rounds.

    Test Strategy
  • Live Simulator

    Try the experience of playing with a dealer without making a deposit.

    Play with a Dealer
Author and update
Article author: Andrew Shepard
Last update: 14.09.2026
Andrew Shepard Head of product

Andrew Shepard is a roulette expert with over 10 years of experience in international gambling markets. At Roulette77.com, he specialises in strategy testing, game mechanics, and developing roulette simulators.