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Odds Converter

This calculator converts common odds formats. The associated probability is also calculated.

To use the calculator, enter the odds in the format of your choosing and press “Convert Odds”.

Decimal / European
Fractional (UK)
Moneyline / American
Hong Kong
Indonesian
Malay
Implied Probability

 

Decimal Odds Conversion Formulas

Decimal odds represent the total return from a winning 1 unit bet. A winning $10 bet at 1.50 decimal odds would return $15.00 for a $5.00 profit (50% return).

Fractional Odds (UK)

Fractional odds express the net return (in fractional form) from a winning 1 unit bet. A winning $10 bet at 1/2 fractional odds would return $15.00 for a $5.00 profit (50% return).

Decimal to Fractional: Decimal = fractional + 1 (expressed as a decimal number, e.g. 1.50)

Fractional to Decimal: Fractional = decimal – 1 (expressed as a fraction, e.g. 3/2)

Moneyline/American Odds

When negative, the American odds indicate the number of units that would need to be successfully wagered to win 100 units. When positive, American odds express the number of units that can be won from a 100 units wager. Note that +100 and -100 are both equivalent to decimal odds of 2.00.

Decimal to Moneyline/American

For decimal odds between 1.00 and 2.00: American = -100 / (decimal – 1) For decimal odds above 2.00: American = (decimal – 1) * 100 (often expressed with a + in front, e.g. 3.00 in decimal odds equals +200 in American odds)

Moneyline/American to Decimal

For American odds >= +100: decimal = (American / 100) + 1
For American odds <= -100: decimal = (-100 / American) + 1

Hong Kong Odds

Hong Kong odds express the net return from a winning 1 unit bet. A winning $10 bet at 0.50 Hong Kong odds would return $15.00 for a $5.00 profit (50% return).

Decimal to Hong Kong: Decimal = Hong Kong + 1

Hong Kong to Decimal: Hong Kong = Decimal – 1

Indonesian Odds

When positive, Indonesian odds express the net return from a winning 1 unit bet. When negative, Indonesian odds represent the number of units needed to be wagered in order to win 1 unit. Note that both 1 and -1 are equivalent to decimal odds of 2.00. Indonesian odds equal American odds divided by 100. Note that both 1 and -1 are equivalent to decimal odds of 2.00.

Decimal to Indonesian

For decimal odds between 1.00 and 2.00: Indonesian = -1 / (decimal – 1)
For decimal odds above 2.00: Indonesian = decimal – 1

Indonesian to Decimal

For Indonesian odds >= 1: decimal = Indonesian + 1
For Indonesian odds <= -1: decimal = (-1 / Indonesian) + 1

Malay Odds

When positive, Malay odds express the net return from a winning 1 unit bet. When negative, Malay odds represent the number of units needed to be wagered in order to win 1 unit. Malay odds fall between -1 and 1, but cannot equal zero. Note that both 1 and -1 are equivalent to decimal odds of 2.00.

Decimal to Malay

For decimal odds between 1.00 and 2.00: Malay = decimal – 1
For decimal odds above 2.00: Malay = -1 / (decimal – 1)

Malay to Decimal

For Malay odds between 0 and 1: decimal = Malay + 1
For Malay odds between -1 and 0: decimal = (-1 / Malay) + 1

Implied Probability

Implied probability is the probability of an outcome occurring as implied by the bookmaker odds. As with all measures of probability, the implied probability always falls in the range 0 <= implied probability <= 1. It is typically expressed as a percentage.

Decimal to Implied Probability: Decimal = 1 / implied probability

Implied Probability to Decimal: Implied Probability = 1 / decimal

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