Type odds in any format — decimal, fractional, or American — and see all three, plus the implied probability the bookmaker is really quoting.
Divide the numerator by the denominator and add 1 (your returned stake): 11/4 → 11 ÷ 4 + 1 = 3.75. Decimal odds are total return per unit staked, which is why they're always at least 1.
Positive odds show profit on a 100 stake: +275 → 275 ÷ 100 + 1 = 3.75. Negative odds show the stake needed to win 100: -150 → 100 ÷ 150 + 1 = 1.67.
For decimal odds: 1 ÷ odds. So 3.75 implies 1 ÷ 3.75 = 26.7%. Sum the implied probabilities of every outcome in a market and you'll get more than 100% — the overround, which is the bookmaker's margin. Our odds formats guide covers this in depth.
| Fractional | Decimal | American | Implied % |
|---|---|---|---|
| 1/2 | 1.50 | -200 | 66.7% |
| 4/5 | 1.80 | -125 | 55.6% |
| EVS (1/1) | 2.00 | +100 | 50.0% |
| 6/4 | 2.50 | +150 | 40.0% |
| 3/1 | 4.00 | +300 | 25.0% |
| 10/1 | 11.00 | +1000 | 9.1% |
Divide the first number by the second and add 1. 11/4 becomes 3.75.
The win chance a price suggests: 1 ÷ decimal odds. Odds of 2.50 imply 40%. If you believe the true chance is higher than the implied probability, the bet has positive expected value.
EVS or 1/1: you win exactly your stake. Decimal 2.00, American +100, implied probability 50%.
Zort reads odds in any format straight off your bet slip — point your camera and the AI scanner logs the stake, odds, and returns automatically, then shows your real P&L across every bookmaker.
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