Odds Converter
Convert between Decimal, HK, Malay, Indo, and US odds formats.
About Odds Converter & Probability Calculator
The Odds Converter provides mathematical conversions between the world's five major sports betting and probability formats: Decimal (European), Fractional (British), American (Moneyline), Hong Kong, Malaysian, and Indonesian odds, alongside exact Implied Probability calculations.
Mathematical Conversion Formulas
| Format | Formula from Decimal Odds ((D)) | Implied Probability ((P)) |
|---|---|---|
| Decimal ((D)) | Standard baseline | (P = \frac{1}{D} \times 100\%) |
| Hong Kong ((HK)) | (HK = D - 1) | (P = \frac{1}{HK + 1} \times 100\%) |
| American ((US)) | (D \ge 2.0: +((D - 1) \times 100)) (D < 2.0: -(\frac{100}{D - 1})) |
Positive: (\frac{100}{US + 100}) Negative: (\frac{-US}{-US + 100}) |
| Indonesian ((Indo)) | (Indo = HK) (if (HK \ge 1.0)) (Indo = -\frac{1}{HK}) (if (HK < 1.0)) |
Matches American format scaled by 100 |
Frequently Asked Questions (FAQ)
What is Implied Probability?
Implied probability represents the conversion of betting odds into a statistical percentage, showing the likelihood of an outcome occurring as estimated by market pricing.
What is the "Overround" or "Vig"?
The sum of implied probabilities across all possible outcomes in an event typically exceeds 100% (e.g. 105%). The excess percentage represents the bookmaker's margin or vigorish.