Betting Odds Converter
Convert between American, Decimal, Fractional and Implied Probability. Free, instant, no signup.
American
+150
Decimal
2.500
Fractional
3/2
Implied probability
40.00%
How odds conversion works
- American → Decimal: Positive: (odds / 100) + 1. Negative: (100 / |odds|) + 1.
- Decimal → Implied %: 1 / decimal × 100.
- Fractional → Decimal: (numerator / denominator) + 1. So 3/2 = 2.50.
- Implied → Fair odds: If you think a team wins -122 of the time, the fair American price is -122.