One price, four views
Odds Converter
Type odds in any box — the others update instantly.
Implied probability includes the bookmaker’s margin.
American odds conversion chart
Exact conversions, rounded for display.
| American | Decimal | Fractional | Implied prob. |
|---|---|---|---|
| -1000 | 1.10 | 1/10 | 90.91% |
| -500 | 1.20 | 1/5 | 83.33% |
| -300 | 1.33 | 1/3 | 75.00% |
| -200 | 1.50 | 1/2 | 66.67% |
| -150 | 1.67 | 2/3 | 60.00% |
| -120 | 1.83 | 5/6 | 54.55% |
| -110 | 1.91 | 10/11 | 52.38% |
| -105 | 1.95 | 20/21 | 51.22% |
| +100 | 2.00 | 1/1 | 50.00% |
| +110 | 2.10 | 11/10 | 47.62% |
| +120 | 2.20 | 6/5 | 45.45% |
| +150 | 2.50 | 3/2 | 40.00% |
| +200 | 3.00 | 2/1 | 33.33% |
| +250 | 3.50 | 5/2 | 28.57% |
| +300 | 4.00 | 3/1 | 25.00% |
| +500 | 6.00 | 5/1 | 16.67% |
| +1000 | 11.00 | 10/1 | 9.09% |
Fractional odds chart (UK)
| Fractional | Decimal | American | Implied prob. |
|---|---|---|---|
| 1/5 | 1.20 | -500 | 83.33% |
| 1/2 | 1.50 | -200 | 66.67% |
| 4/6 | 1.67 | -150 | 60.00% |
| 10/11 | 1.91 | -110 | 52.38% |
| Evens | 2.00 | +100 | 50.00% |
| 6/4 | 2.50 | +150 | 40.00% |
| 2/1 | 3.00 | +200 | 33.33% |
| 5/2 | 3.50 | +250 | 28.57% |
| 3/1 | 4.00 | +300 | 25.00% |
| 9/2 | 5.50 | +450 | 18.18% |
| 7/1 | 8.00 | +700 | 12.50% |
| 10/1 | 11.00 | +1000 | 9.09% |
FAQ
Frequently asked questions
How do I convert American odds to decimal?
For positive odds divide by 100 and add 1: +150 → 2.50. For negative odds divide 100 by the number and add 1: −200 → 1.50.
How do I convert fractional odds to decimal?
Divide the first number by the second and add 1. 5/2 → 3.50, which is +250 in American odds.
What is implied probability?
It is 1 ÷ decimal odds — the win chance the price implies, before removing the bookmaker’s margin. −110 implies 52.38%.
Why are +100 and −100 the same?
Both mean “even money”: you win exactly what you stake. In decimal that is 2.00 and in fractional 1/1 (evens).
Why do some fractional odds look unusual?
Decimal odds like 1.91 do not always map to a neat fraction. We show the closest fraction with a denominator up to 100, calculated exactly.
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