Free tool
Odds converter
Convert any price between decimal (2.50), fractional (6/4) and American (+150) odds, and see the implied probability.
- Decimal
- 2.50
- Fractional
- 6/4
- American
- +150
- Implied probability
- 40.00%
Odds conversion chart
| Decimal | Fractional | American | Implied probability |
|---|---|---|---|
| 1.10 | 1/10 | -1000 | 90.9% |
| 1.25 | 1/4 | -400 | 80.0% |
| 1.50 | 1/2 | -200 | 66.7% |
| 1.67 | 4/6 | -149 | 59.9% |
| 1.80 | 4/5 | -125 | 55.6% |
| 1.91 | 10/11 | -110 | 52.4% |
| 2.00 | 1/1 | +100 | 50.0% |
| 2.20 | 6/5 | +120 | 45.5% |
| 2.50 | 6/4 | +150 | 40.0% |
| 3.00 | 2/1 | +200 | 33.3% |
| 3.50 | 5/2 | +250 | 28.6% |
| 4.00 | 3/1 | +300 | 25.0% |
| 5.00 | 4/1 | +400 | 20.0% |
| 6.00 | 5/1 | +500 | 16.7% |
| 8.00 | 7/1 | +700 | 12.5% |
| 10.00 | 9/1 | +900 | 10.0% |
| 15.00 | 14/1 | +1400 | 6.7% |
| 21.00 | 20/1 | +2000 | 4.8% |
Want the background? Read our guide: betting odds explained.
Frequently asked questions
How do I convert decimal odds to American?
If decimal odds are 2.00 or more, American odds = (decimal − 1) × 100, shown with a plus sign. Below 2.00, American odds = −100 ÷ (decimal − 1). So 2.50 is +150 and 1.50 is −200.
How do I convert fractional odds to decimal?
Divide the first number by the second and add 1. For example 6/4 = 1.5 + 1 = 2.50.
What is implied probability?
Implied probability is the chance of an outcome suggested by the odds: 1 ÷ decimal odds. Odds of 2.50 imply a 40% chance, before removing the bookmaker's margin.