Implied probability calculator
−110 implies a 52.4% chance of winning. It is 1.91 in decimal odds and 10/11 in fractional odds.
A price's implied probability is one divided by its decimal odds: the share of the time a bet at that price has to win to break even. Type any price to see the chance it implies, the price in every format and where it sits among common prices.
−110 as a chance
52.4%the win rate needed to break even
- American
- −110
- Decimal
- 1.91
- Fractional
- 10/11
- Implied
- 52.4%
- Market
- 52.4¢
Decimal in Europe, Canada and Australia · fractional in the UK and Ireland · American in the US
What it pays at −110
- Stake
- $100.00
- Profit
- $90.91
- Total return
- $190.91
A bet of $110.00 wins $100.00 · Each dollar bet wins $0.91
Where −110 sits
- −30075.0%
- −20066.7%
- −15060.0%
- −11052.4%
- +10050.0%
- +15040.0%
- +20033.3%
- +30025.0%
- +50016.7%
If it really wins… (5)
| Win rate | Expected profit per $100 |
|---|---|
| 42.4% | −$19.09 |
| 47.4% | −$9.55 |
| 52.4% | $0.00 |
| 57.4% | +$9.55 |
| 62.4% | +$19.09 |
How it's worked out (3)
| Working | Result | |
|---|---|---|
| Decimal odds (F1.1) | 1 + 100 ÷ 110 | 1.9091 |
| Implied chance (F1.4) | 1 ÷ 1.9091 | 52.4% |
| $100.00 returns | $100.00 × 1.9091 | $190.91 |
Questions about the implied probability calculator
How is implied probability calculated from American odds?
For a minus price, divide the price without its sign by itself plus 100. For a plus price, divide 100 by the price plus 100. Both give one divided by the decimal odds.
Why do both sides add up to more than 100%?
Each price carries the book's margin, so the chances the two prices imply add up to more than 100%. The amount over 100% is the overround; the no-vig calculator takes it out to give fair chances that add up to 100%.
Is implied probability the real chance of winning?
No. It is the chance the price needs to break even, with the book's margin in it. Whether a bet is worth taking depends on how your own estimate of the chance compares with it.
How does a probability turn back into odds?
One divided by the probability is the fair decimal price. Ask Kelly with a probability, such as 45%, to see it in every format.