DomVsBeta

Glossary · Formats

American Odds

Plus/minus prices used in US markets. -110 means risk 110 to win 100.

Negative American odds (e.g. -150) show how much you must risk to win 100. Positive American odds (+150) show how much you win on a 100 stake. Convert to decimal for any math.

Formula
If odds are positive (+a):  decimal = a/100 + 1
If odds are negative (-a):  decimal = 100/a + 1
Worked example
+150 → 150/100 + 1 = 2.50
  -120 → 100/120 + 1 ≈ 1.833
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