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Convert One Betting Odds Format To Another

Convert One Betting Odds Format To Another

2017-09-22

 

To Convert One Odds Format To Another, we first need to convert any odds format to their implied probability. Once we have done this, the calculations are fairly straight forward.

 
  • Converting Implied Probability Into Decimal Odds.

Implied probability: 75%
Decimal odds = 100 / 75 = 1.33
 
  • Converting Implied Probability Into Fractional Odds

Implied probability: 25%
Fractional odds = ((100 / 25) – 1) = 4 - 1 = 3

Fractional odds is expressed as 3 to 1.
 
  • Converting Implied Probability Into American Odds: This depends on whether the implied probability is above 50% or below.

If the implied probability is above 50%, we make the following calculation.


Implied probability: 75%.
American odds = - (probability)/(100 – probability) * 100 = - (75 / (100 – 75)) * 100 = - (75 / 25) * 100 = - 3 * 100

American odds = - 300.

If the implied probability is below 50%, we make the following calculation.

Implied probability: 25%.
American odds = ((100 - probability)/(probability) * 100) = ((75) / (25) * 100) = 3 * 100

American odds = + 300
 

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