Guide about how
to convert odds
to convert odds
3 min read
Updated Feb 1, 2026
Formulas for converting popular odds formats
Formula
How to convert decimal odds
to probability
to probability
1 / decimal odds
How to convert fractional odds
to probability
to probability
denominator / (denominator + numerator)
How to convert minus moneyline
to probability
to probability
minus moneyline / (minus moneyline – 100)
Converting plus moneyline
to probability
to probability
100 / ( plus moneyline odds + 100 )
Convert To Odds
Formula
Converting plus moneyline
to probability
to probability
1 / probability percentage
How to convert probability
to fractional odds
to fractional odds
(1 / probability percentage ) -1
How to convert probability
to minus moneyline odds
to minus moneyline odds
– ( implied probability / (1 – implied probability)) x 100
How to convert probability
to plus moneyline odds
to plus moneyline odds
(1 – implied probability) / implied probability x 100
Convert To Probability
Betting Odds Explained
How To Convert Odds – Step By Step
Knowing how to convert odds
to probability and alternative odds formats can be very helpful. In fact,
if you don’t know how to convert betting odds into their respective implied probabilities, you’re
not helping your chances
in the competitive world of sports betting. Understanding the implied probability behind the odds on offer is key to assessing the potential value in a particular betting market.
And it is just as important when assessing the value that exists with regards to specific odds
on a particular outcome.
If the implied probability is less than your own assessed probability
of a particular outcome occurring, that outcome represents a value betting opportunity.
If, however, you want to learn
how to convert odds to probability
and how to covert implied probability
to various odds formats, please read on. This article explains in detail how to convert the three most popular odds formats in the world – decimal, fractional and American – into their implied probabilities and how
to convert an implied probability
into either of these odds formats.
to probability and alternative odds formats can be very helpful. In fact,
if you don’t know how to convert betting odds into their respective implied probabilities, you’re
not helping your chances
in the competitive world of sports betting. Understanding the implied probability behind the odds on offer is key to assessing the potential value in a particular betting market.
And it is just as important when assessing the value that exists with regards to specific odds
on a particular outcome.
If the implied probability is less than your own assessed probability
of a particular outcome occurring, that outcome represents a value betting opportunity.
If, however, you want to learn
how to convert odds to probability
and how to covert implied probability
to various odds formats, please read on. This article explains in detail how to convert the three most popular odds formats in the world – decimal, fractional and American – into their implied probabilities and how
to convert an implied probability
into either of these odds formats.
Knowing how to convert odds to probability and alternative odds formats can be very helpful. In fact,
if you don’t know how to convert betting odds into their respective implied probabilities, you’re not helping your chances in the competitive world of sports betting. Understanding the implied probability behind
the odds on offer is key to assessing the potential value in a particular betting market.
And it is just as important when assessing the value that exists with regards to specific odds on a particular outcome. If the implied probability is less than your own assessed probability of a particular outcome occurring, that outcome represents a value betting opportunity.
If, however, you want to learn how to convert odds to probability and how to covert implied probability
to various odds formats, please read on. This article explains in detail how to convert the three most popular odds formats in the world – decimal, fractional and American – into their implied probabilities and how
to convert an implied probability into either of these odds formats.
if you don’t know how to convert betting odds into their respective implied probabilities, you’re not helping your chances in the competitive world of sports betting. Understanding the implied probability behind
the odds on offer is key to assessing the potential value in a particular betting market.
And it is just as important when assessing the value that exists with regards to specific odds on a particular outcome. If the implied probability is less than your own assessed probability of a particular outcome occurring, that outcome represents a value betting opportunity.
If, however, you want to learn how to convert odds to probability and how to covert implied probability
to various odds formats, please read on. This article explains in detail how to convert the three most popular odds formats in the world – decimal, fractional and American – into their implied probabilities and how
to convert an implied probability into either of these odds formats.
There are three basic steps to converting odds:
For example, “Decimal Odds” of 3.00 has an implied probability of 33.3% which can then be converted to fractional odds of 2/1.
This article discusses this process of odds conversion in detail with the use of step by step real world examples.
This article discusses this process of odds conversion in detail with the use of step by step real world examples.
Determine whether the odds are Decimal, Fractional or American
Convert the odds to their implied probability
Convert the implied probability to your preferred odds format
How To Convert Odds To Probability
Typically, there are three kinds of odds you will come across in the sports betting landscape.
Decimal Odds: represented as 1.65 or 2.95 etc.
Fractional odds: represented as 5/2 or 3 to 2 ‘on’ etc.
Moneyline odds: represented as -120 or +140 etc.
Betting expert
Decimal Odds:
Represented as 1.65 or 2.95 etc.
Fractional Odds:
Represented as 5/2 or 3 to 2 etc.
Moneyline Odds:
Represented as -120 or + 140 etc.