Moneyline Odds Calculator

Convert American moneyline odds to decimal, fractional and probability.

Decimal odds 1.667
Implied probability (%) 60
Fractional (approx) 0.6667

Formula: Decimal and implied probability from American odds

Step-by-step with your numbers:
1. Values used:
2. American odds = -150
3.
4. Decimal odds = 1.667
5. Implied probability = 60%
6. Fractional (approx) = 0.6667
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American (moneyline) odds convert into decimal odds and an implied win probability.

The math behind it

Positive odds: decimal = odds/100 + 1. Negative odds: decimal = 100/|odds| + 1. Implied probability = 1/decimal.

Worked example

-150 gives decimal 1.667 and a 60% implied probability.

FAQ

What does -150 mean?

You must bet $150 to win $100 (the favorite).