Betting Odds Calculator
Calculate your potential payout and profit
About the Calculator
Betting odds can feel abstract until you see the payout in dollars. This calculator turns any odds format into a clear return and profit, so you know exactly what a bet is worth. Enter your stake and odds, then compare American, decimal, or fractional formats without doing the math yourself. It is useful for comparing sportsbooks, checking value on a line, or explaining a bet to someone else. You can also see how favorites and underdogs change the payoff, which helps you weigh risk and reward. Use it before you place a wager to make sure the payout matches your expectations.
How to Calculate Manually
- 1Select your odds format (American, Decimal, or Fractional)
- 2Enter your stake amount
- 3Enter the odds value
- 4View your potential payout and profit
Total Payout
$190.91
Profit
$90.91
The Formula
Examples
A $100 bet at -110 (American)
Returns $190.91 (Profit: $90.91)
A $50 bet at 2.5 (Decimal)
Returns $125 (Profit: $75)
A $20 bet at 5/2 (Fractional)
Returns $70 (Profit: $50)
Tips & Strategies
Negative American odds indicate favorites. positive odds indicate underdogs
Quick tip. Decimal odds include your stake in the payout
Quick tip. Compare odds across different formats to understand value
Cross-check when the decision matters. Run a second scenario with rounded inputs or a different path to the same quantity so you do not rely on a single fragile chain of arithmetic.
Write down units and rounding rules next to the answer. Half of spreadsheet mistakes are inconsistent units or silent rounding; noting assumptions makes the number usable a month later.
Things Worth Knowing
- •American, decimal, and fractional formats exist because different regions standardized the same probability in different ways. All three express the same implied chance.
- •The first legal sportsbooks in the United States opened in Nevada in 1949 and were known as Turf Clubs.
- •Ladbrokes is often cited as one of the oldest bookmakers still operating, with roots in the late 1800s.
- •Vig, rake, juice, and margin all refer to the bookmaker's built in fee or edge on a market.