All prices quoted on Betfair are 'Decimal' Odds. Decimal Odds differ from the Odds traditionally quoted in the UK in that they include your stake as part of your total return. If you place a bet of £10 at Decimal Odds of 4.0 and win, then your total return (including stake) is £40. In the UK this would be quoted as 3/1, returning to you winnings of £30 plus your original stake of £10.
Decimal Odds are simpler to use than Traditional Odds, and are the most common form of Odds quoted in countries outside the UK. In addition, for the mathematically minded, Decimal Odds relate more closely to probability: in a race with four equally-matched horses, the probability of each horse winning is 25%. Each horse will have Traditional Odds of 3/1 or Decimal Odds of 4.0. Hence, the probability of an outcome equals 1 divided by its Decimal Odds (1 / 4.0 = 25%).
Decimal Odds also offer many more prices – Betfair offer every price between 1.01 and 2.0 to two decimal places. With no margins to protect, our customers deserve to see every price available.
Converting Decimal Odds to Traditional Odds: Decimal Odds minus 1.0 = Traditional Odds (x to 1). Eg 4.0 = 3/1, 1.80 = 4/5 (0.8 to 1)
Converting Traditional Odds to Decimal Odds: Traditional Odds (x to 1) plus 1.0 = Decimal Odds Eg 7/1 = 8.0, 1/2 = 1.50
| Fractional | Decimal | American |
|---|---|---|
| 10/1 | 11.00 | +1000 |
| 9/1 | 10.00 | +900 |
| 8/1 | 9.00 | +800 |
| 7/1 | 8.00 | +700 |
| 6/1 | 7.00 | +600 |
| 5/1 | 6.00 | +500 |
| 4/1 | 5.00 | +400 |
| 3/1 | 4.00 | +300 |
| 2/1 | 3.00 | +200 |
| Evs | 2.00 | +100 |
| 10/11 | 1.91 | -110 |
| 5/6 | 1.83 | -120 |
| 4/5 | 1.80 | -125 |
| 8/11 | 1.73 | -138 |
| 4/6 | 1.67 | -150 |
| 8/13 | 1.62 | -163 |
| 4/7 | 1.57 | -175 |
| 8/15 | 1.53 | -188 |
| 1/2 | 1.50 | -200 |
| 4/9 | 1.44 | -225 |
| 2/5 | 1.40 | -250 |
| 4/11 | 1.36 | -275 |
| 1/3 | 1.33 | -300 |
| 2/7 | 1.29 | -350 |
| 1/4 | 1.25 | -400 |
| 2/9 | 1.22 | -450 |
| 1/5 | 1.20 | -500 |
| 1/6 | 1.17 | -600 |
| 1/7 | 1.14 | -700 |
| 1/8 | 1.13 | -800 |
| 1/10 | 1.10 | -1000 |