Odds converter
Convert fractional odds to decimal, American and implied chance, or type decimal odds to find the nearest fractional price.
Odds conversion table
| Fractional | Decimal | American | Implied chance |
|---|---|---|---|
| 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% |
| 1/2 | 1.50 | -200 | 66.7% |
| 4/6 | 1.67 | -150 | 60.0% |
| 4/5 | 1.80 | -125 | 55.6% |
| 10/11 | 1.91 | -110 | 52.4% |
| Evens | 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% |
| 10/3 | 4.33 | +333 | 23.1% |
| 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% |
| 11/2 | 6.50 | +550 | 15.4% |
| 6/1 | 7.00 | +600 | 14.3% |
| 13/2 | 7.50 | +650 | 13.3% |
| 7/1 | 8.00 | +700 | 12.5% |
| 15/2 | 8.50 | +750 | 11.8% |
| 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% |
| 14/1 | 15.00 | +1400 | 6.7% |
| 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% |
| 66/1 | 67.00 | +6600 | 1.5% |
| 100/1 | 101.00 | +10000 | 1.0% |
How we use this at The Gallop
Every tip we've given since October 2025 is on our results page, settled with exactly these sums: each-way bets at standard place terms, Rule 4 where it applied, and the bigger of the advised price and the starting price, as bookmakers offering best odds guaranteed would pay. You can check any bet by putting it through the calculator.
Questions
How do I convert fractional odds to decimal?
Divide the first number by the second and add one. 5/2 is 2.5 plus 1, which is 3.50. Decimal odds include your stake, so a £1 bet at 3.50 returns £3.50.
What does the implied chance mean?
It is the probability the odds suggest: one divided by the decimal odds. At 3/1 (4.00) the market rates the horse a 25% chance. Add up every runner's implied chance and you get more than 100%: the extra is the bookmaker's margin.
What are American odds?
Positive American odds show the profit on a $100 stake, so +250 is 5/2. Negative odds show the stake needed to win $100, so −200 is 1/2.
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Every tip, every race day
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