There are generally three possible methods of stating odds that most bookmakers use. These are decimal, fractional, and American moneyline.
Converting the various betting odds to probability percentages helps make it easier to understand.
The converter table below illustrates the three types of odds with the respective probability percentages.
Betting Odds Converter Table
| Decimal | Fraction | American (Moneyline) | Implied Probability | |
|---|---|---|---|---|
| wdt_ID | Decimal | Fraction | American (Moneyline) | Implied Probability |
| 1 | 1.14 | 1/7 | -700 | 87.5% |
| 2 | 1.17 | 1/6 | -600 | 85.7% |
| 3 | 1.2 | 1/5 | -500 | 83.3% |
| 4 | 1.22 | 2/9 | -450 | 81.8% |
| 5 | 1.25 | 1/4 | -400 | 80.0% |
| 6 | 1.29 | 2/7 | -350 | 77.8% |
| 7 | 1.33 | 1/3 | -300 | 75.0% |
| 8 | 1.36 | 4/11 | -275 | 73.3% |
| 9 | 1.45 | 4/9 | -225 | 69.2% |
| 10 | 1.5 | 1/2 | -200 | 66.7% |
| 11 | 2 | 1/1 | 100 | 50.0% |
| 12 | 2.25 | 5/4 | 125 | 44.4% |
| 13 | 3 | 2/1 | 200 | 33.3% |
| 14 | 4 | 3/1 | 300 | 25.0% |
| 15 | 10 | 9/1 | 900 | 10.0% |
| 16 | 10.99 | 10/1 | 1000 | 9.1% |
| 17 | 20.83 | 20/1 | 2000 | 4.8% |
| 18 | 50 | 50/1 | 5000 | 2.0% |
| 19 | 100 | 100/1 | 10000 | 1.0% |
| 20 | 1000 | 1000/1 | 100000 | 0.1% |
The formulas for converting the betting odds to implied probability percentages are below:
Convert to Probability
| Convert to Implied Probability | Formula | |
|---|---|---|
| wdt_ID | Convert to Implied Probability | Formula |
| 1 | Convert decimal odds to probability | 1 / decimal odds |
| 2 | Convert fractional odds to probability | denominator / (denominator + numerator) |
| 3 | Convert plus moneyline to probability | 100 / (plus moneyline odds + 100) |
| 4 | Convert minus moneyline to probability | minus moneyline / (minus moneyline - 100) |
The formulas for converting the implied probability percentages to betting odds are below:
Convert to Odds
| Convert to Odds | Formula | |
|---|---|---|
| wdt_ID | Convert to Odds | Formula |
| 1 | Convert probability to decimal odds | 1 / probability percentage |
| 2 | Convert probability to fractional odds | (1 / probability percentage) - 1 |
| 3 | Convert probability to plus moneyline odds | (1-implied probability) / implied probability x 100 |
| 4 | Convert probability to minus moneyline odds | -(implied probability / (1-Implied probability)) x 100 |
