Probability Calculator

Implied probability is a formula used to determine if the risk is worth the reward. In other words, the value of your wager. This is fundamental to winning money.

Implied Probability Formula:

  • Negative numbers = Favourite
    -Odd / (-Odds + 100) * 100 = implied probability
  • Positive numbers = Underdog
    100 / (+Odds + 100) * 100 = implied probability

How to apply the implied probability formula

When checking the lines you find that Fighter A is -450, and Fighter B is +250.

A: 450 ➗ (450 + 100) x 100  = 81%

B: 100 ➗ (250 + 100) x 100  = 28.5%