American Odds
A positive number (like +150) shows the profit on a $100 bet. A negative number (like -110) shows how much you must wager to win $100. American odds never sit between -100 and +100.
Tool 01
Parlay Payout Calculator
Enter your wager and the odds for each leg to calculate your potential parlay payout.
2 / 15 legs
Quick Examples
Legs · American Odds
Results
Combined American—
Combined Decimal—
Implied Probability—
Potential Profit—
Total Payout—
Enter a positive bet amount and valid American odds for each leg to see your projected payout.
Tool 02
Betting Odds Converter
Enter American, decimal, or fractional odds and instantly see the equivalent formats.
Examples
Results
American—
Decimal—
Fractional—
Implied Probability—
Profit on $100—
Total Payout on $100—
Enter valid odds in the selected format to view the conversions.
The Basics
How It Works
Short primers on the numbers behind every bet. Skim the ones you need — the tools above handle the math for you.
Decimal Odds
A single multiplier that includes your stake. Multiply your bet by the decimal to get your total payout — for example, $10 at 2.50 returns $25.00.
Fractional Odds
Written as a ratio (like 10/11 or 3/2) showing profit relative to stake. 10/11 means you profit $10 for every $11 wagered; 3/2 means $3 profit for every $2 wagered.
Parlay Payouts
Convert each leg to decimal odds, multiply them together to get the combined decimal, then multiply by your stake for the total payout. Missing any leg voids the parlay.
Profit vs. Total Payout
Total payout is everything the sportsbook returns — your original stake plus your winnings. Potential profit is only the winnings: total payout minus the amount you wagered.