Enter decimal odds like 1.50, 1.91, or 2.50 to convert the price into implied probability, 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.
Implied Probability Calculator
Convert American, decimal, or fractional odds into implied probability, then check the same line against profit and payout from your stake.
American Odds to Implied Probability Calculator
Enter American odds like -200, -110, or +150 to convert the moneyline into implied probability, decimal odds, fractional odds, profit, and total payout.
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.
A decimal odds to implied probability calculator converts total-payout decimal odds into a break-even win percentage. Decimal odds are common on international sportsbooks and are the easiest format for EV, payout, and parlay math.
Implied Probability = 1 / Decimal OddsDivide 1 by the decimal odds, then convert the result to a percentage. Decimal odds of 1.50 imply 1 ÷ 1.50 = 66.67%, while decimal 2.50 implies 40.00%.
Divide 1 by 1.50 and multiply by 100. The result is 66.67% implied probability.
Divide 1 by 2.50 and multiply by 100. The result is 40.00% implied probability.
Decimal odds represent total payout per unit staked, so implied probability is simply 1 divided by the decimal price.
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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