Betting Odds Calculator
Enter your wager and odds to see your payout, profit, and implied win probability.
How the Betting Odds Calculator Works
Enter any wager amount and the odds offered by your sportsbook in American, decimal, or fractional format. The calculator instantly shows your total payout (stake + profit), net profit, and the implied probability — the likelihood of winning that the odds represent.
Understanding Betting Payouts
With American odds, a bet at -110 means you need to wager $110 to profit $100. A bet at +200 means a $100 wager profits $200. The payout always includes your original stake returned to you.
With decimal odds, just multiply your wager by the decimal number to get your total payout. A $50 bet at 2.50 returns $125 ($75 profit + $50 stake).
With fractional odds, the first number is your profit relative to the second number as your stake. At 5/2 odds, you profit $5 for every $2 wagered.
What Is Implied Probability?
Implied probability tells you how often a bet needs to win to break even at the given odds. At -110, the implied probability is 52.4% — meaning the bet needs to win more than 52.4% of the time to be profitable long-term. This number already includes the sportsbook's vig (profit margin), so the true break-even probability is slightly lower.