Free Tool

Odds Converter

Convert between American, Decimal, and Fractional odds instantly. See the implied probability for any line.

🔄3 formats

⚡Instant conversion

📊Implied probability

Enter Odds

American

-110

Decimal

1.909

Fractional

10/11

Implied Probability

52.4%

Win probability implied by these odds52.4%

0%100%

Common Odds Reference

American	Decimal	Fractional	Implied Prob
-200	1.500	1/2	66.7%
-150	1.667	2/3	60.0%
-110	1.909	10/11	52.4%
+100	2.000	1/1	50.0%
+150	2.500	3/2	40.0%
+200	3.000	2/1	33.3%
+300	4.000	3/1	25.0%

American, Decimal and Fractional Odds Explained

American

+/− 100 Format

Negative odds (−150): bet that amount to win $100. Positive odds (+130): win that amount on a $100 bet. Standard in US sportsbooks.

Decimal

Total Return Format

Decimal odds represent your total return per $1 staked, including your stake. 2.5 means a $10 bet returns $25 total ($15 profit). Standard in Europe and Australia.

Fractional

Profit/Stake Format

Fractional odds show profit relative to stake. 3/1 means win $3 for every $1 bet. 1/2 means win $1 for every $2 bet. Traditional in UK horse racing.

Learn more: Implied Probability · Juice / Vig · Understanding Implied Probability

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