Betting Odds Calculator

Our betting odds calculator instantly shows you how much you can win based on your stake and the odds offered. Whether you're betting on NFL, NBA, MLB, or any other sport, this tool helps you understand your potential payout before placing a bet.

Understanding Betting Odds Formats

Sportsbooks display odds in three main formats. Our calculator supports all three:

American Odds (Moneyline)

The most common format in US sportsbooks. Negative odds (-) show how much you need to bet to win $100. Positive odds (+) show how much you win on a $100 bet.

• -110: Bet $110 to win $100 profit ($210 total return)
• +150: Bet $100 to win $150 profit ($250 total return)

Decimal Odds

Popular in Europe and Australia. Simply multiply your stake by the decimal odds to get your total return (including stake).

• 1.91: $100 × 1.91 = $191 total return ($91 profit)
• 2.50: $100 × 2.50 = $250 total return ($150 profit)

Fractional Odds

Traditional format used in UK betting. The fraction shows profit relative to stake.

• 10/11: Bet $11 to win $10 profit
• 3/2: Bet $2 to win $3 profit

What is Implied Probability?

Implied probability converts odds into a percentage chance of winning. It helps you assess whether the odds offer good value compared to your own assessment of the outcome's likelihood.

For example, -110 odds have an implied probability of 52.4%. If you believe the true probability is higher than 52.4%, the bet has positive expected value (+EV).