Convert 21 to 9 Odds to Probability

21 to 9 Odds means that there are 21 chances of one outcome and 9 chances of a different outcome.

We will call these different outcomes A and B. Thus, there are 21 A's and 9 B's in 21 to 9 Odds.

21 to 9 Odds can be written as a ratio of 21/9. Instead of a ratio, Probability shows the percent chance of the outcomes A and B.

The two formulas to convert Odds to Probabilities are as follows

(A/(A+B))*100 = A%
(B/(A+B))*100 = B%

When we plug the 21 to 9 Odds numbers into the formulas, we get:

(21/(21+9))*100 = 70.00%
(9/(21+9))*100 = 30.00%

Therefore, 21 to 9 Odds converts to the following Probabilities:

70.00% Probability of A

30.00% Probability of B

So instead of saying 21 to 9 Odds, you could say that there is a 70.00% Probability.

Odds To Probability Converter
Convert more Odds here.

Convert 21 to 10 Odds to Probability
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