Enter an implied probability like 66.67%, 52.38%, or 40% to convert the break-even chance into decimal odds, American odds, fractional odds, profit, and total payout.
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Convert the line once, then move into fair-price, Kelly sizing, Expected Value Calculator, or hedge math without re-entering the core numbers.
Manual inputs only. No automated odds lookup or automatic bet placement was used.
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The stake field turns this converter into a moneyline payout calculator: profit is stake times net odds, while total payout includes your original stake.
Probability to American Odds Converter
Enter an implied probability like 66.67%, 52.38%, or 40% to convert the break-even chance into American odds, decimal odds, fractional odds, profit, and total payout.
Implied Probability Calculator
Convert American, decimal, or fractional odds into implied probability, then check the same line against profit and payout from your stake.
Expected Value Calculator
Enter sportsbook odds, your estimated win probability, and stake to model EV dollars, ROI, edge, fair odds, payout, and Kelly sizing.
Odds Converter
Convert American, decimal, fractional, and implied probability odds, then see profit and total payout from your stake.
For informational and educational purposes only. Not financial or gambling advice. All calculations assume odds remain constant and bets execute as entered. Actual results may vary. Gambling involves risk of loss.
An implied probability to decimal odds converter turns a break-even percentage into total-payout decimal odds. Decimal odds are the cleanest bridge between probability, payout, EV, Kelly, and parlay math.
Decimal Odds = 1 / ProbabilityDivide 1 by the probability expressed as a decimal. A 66.67% probability is 0.6667, so decimal odds are about 1 ÷ 0.6667 = 1.50.
Use 1 divided by 0.6667. The result is about decimal 1.50.
Use 1 divided by 0.40. The result is decimal 2.50.
Yes. Decimal odds show total payout per unit staked, including the returned stake.
Implied Probability
The probability of an outcome as implied by the betting odds, including the bookmaker's margin.
Moneyline
A bet on which team or player will win a game outright, with no point spread.
Vig (Vigorish)
The commission a sportsbook charges on a bet, built into the odds.
True Odds
The actual mathematical probability of an outcome, without any bookmaker margin.
Expected Value (EV)
The average amount you can expect to win or lose per bet over time.
No-Vig Odds
The true fair odds after removing the sportsbook's built-in margin.
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