Converting Odds Ratios To and From Percentages
Odds are most commonly expressed as ratios, but converting them to percentages will often make them easier to work with. The ratio has two numbers: the size of the pot and the cost of the call. To convert this ratio to the equivalent percentage, we add these two numbers together and then divide the cost of the call by this sum. For example, the pot is $30, and the cost of the call is $10. The pot odds in this situation are 30:10, or 3:1 when simplified. To get the percentage, we add $30 and $10 to get a sum of $40 and then divide $10 by $40, giving us 1/4, or 25%.
To convert any percentage or fraction to the equivalent odds, we subtract the numerator from the denominator and then divide this remainder by the numerator. For example, to convert 1/4 (or 25%), we subtract 1 from 4 to get a remainder of 3 (or 25 from 100 to get a remainder of 75) and then divide 3 by 1 (or 75 by 25), giving us 3, or exactly 3:1.
See also: Fractional oddsRead more about this topic: Pot Odds
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