Convert betting odds between fractional, decimal and American (moneyline) formats and see the implied probability. Type in any box and the others update as you go.
e.g. 5/2, 4/6 or evens
e.g. 3.5
e.g. +250 or -110
e.g. 40
A £10 stake at these odds returns £35.00 including the stake. The implied chance is 28.6%, before the bookmaker margin.
| Fractional | Decimal | American | Implied probability |
|---|---|---|---|
| 1/10 | 1.10 | -1000 | 90.9% |
| 1/5 | 1.20 | -500 | 83.3% |
| 1/4 | 1.25 | -400 | 80.0% |
| 1/3 | 1.33 | -300 | 75.0% |
| 2/5 | 1.40 | -250 | 71.4% |
| 4/9 | 1.44 | -225 | 69.2% |
| 1/2 | 1.50 | -200 | 66.7% |
| 8/13 | 1.62 | -163 | 61.9% |
| 4/6 | 1.67 | -150 | 60.0% |
| 8/11 | 1.73 | -138 | 57.9% |
| 4/5 | 1.80 | -125 | 55.6% |
| 5/6 | 1.83 | -120 | 54.5% |
| 10/11 | 1.91 | -110 | 52.4% |
| Evens (1/1) | 2.00 | +100 | 50.0% |
| 11/10 | 2.10 | +110 | 47.6% |
| 6/5 | 2.20 | +120 | 45.5% |
| 5/4 | 2.25 | +125 | 44.4% |
| 11/8 | 2.38 | +138 | 42.1% |
| 6/4 | 2.50 | +150 | 40.0% |
| 13/8 | 2.63 | +163 | 38.1% |
| 7/4 | 2.75 | +175 | 36.4% |
| 15/8 | 2.88 | +188 | 34.8% |
| 2/1 | 3.00 | +200 | 33.3% |
| 9/4 | 3.25 | +225 | 30.8% |
| 5/2 | 3.50 | +250 | 28.6% |
| 11/4 | 3.75 | +275 | 26.7% |
| 3/1 | 4.00 | +300 | 25.0% |
| 7/2 | 4.50 | +350 | 22.2% |
| 4/1 | 5.00 | +400 | 20.0% |
| 9/2 | 5.50 | +450 | 18.2% |
| 5/1 | 6.00 | +500 | 16.7% |
| 6/1 | 7.00 | +600 | 14.3% |
| 7/1 | 8.00 | +700 | 12.5% |
| 8/1 | 9.00 | +800 | 11.1% |
| 9/1 | 10.00 | +900 | 10.0% |
| 10/1 | 11.00 | +1000 | 9.1% |
| 12/1 | 13.00 | +1200 | 7.7% |
| 16/1 | 17.00 | +1600 | 5.9% |
| 20/1 | 21.00 | +2000 | 4.8% |
| 25/1 | 26.00 | +2500 | 3.8% |
| 33/1 | 34.00 | +3300 | 2.9% |
| 50/1 | 51.00 | +5000 | 2.0% |
| 100/1 | 101.00 | +10000 | 1.0% |
Once you have decimal odds, the acca and bet return calculator will multiply a whole accumulator for you. Implied probability is the bookmaker's view including their margin; our AI acca tips strip that margin out and show the model's own percentage for each leg. Probabilities, not guarantees.
18+ only. ArtificialAcca shows probabilities, not guarantees: accumulators lose far more often than single bets, so never stake more than you can afford to lose. Free support is available at BeGambleAware.org.
