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How to Convert Odds to Percentages Using a Calculator

Odds and percentages can relate to the probability that a certain outcome will occur. Gambling, sports statistics and medical prognoses deal with odds and percentages in various ways. Odds are usually written as a certain chance out of a whole (as in a one-in-100 chance). Percentages are numbers with a percent sign that indicate a fraction of the whole, which is 100. You can easily convert between odds and percentages with a calculator.

Instructions

- 1
  Enter the number "100" into your calculator.
- 2
  Press the divide button.
- 3
  Key in the second number in the set of odds. For example, if the probability is 1 in 4 (or 1:4), key in the number 4.
- 4
  Press the "=" button. In this example, you should see the number 25, since 100 divided by 4 is 25.
- 5
  Press the multiplication button.
- 6
  Key in the first number in the set of odds. In this example, you would press the number "1."
- 7
  Press the "=" button to view your answer. In this example, the answer would be 25.
- 8
  Add a percent sign if you are writing your answer. In this case you would write "25%," since the odds of 1 in 4 are equal to a 25 percent chance of an event occurring.

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