Decimal Odds to Probability Odds Converter

How to convert Decimal odds to Probability odds

Use this calculator to convert decimal, also known as European odds, into fractional odds. Simply input a valid decimal value and the calculator will automatically convert it into probability odds.

Formula used for converting decimal odds to probability odds

Subtract 1 from the decimal odds and express the result as a fraction of two whole numbers.

For example, decimal odds of 2.50 convert to probability odds of 40%.

Decimal odds explained

Decimal odds are a number greater than 1 and are most commonly used in Europe, hence they are commonly referred to as 'European odds'. However they are also used in other parts of the world, most notably Canada and Australia. Decimal odds are basically just a multiplier betweent the bet size and total payout. This makes it quite an intuitive odds format and makes for easy payout and profit calculations.

Probability odds explained

Probability odds or implied probability is, as the name suggests, the underlying implied probability of the outcome occurring. It's not an odds format in the usual sense but implied probability is widely used by professional bettors in valuebetting and arbitrage betting. It can for example be used to compare the bookies priced odds to an estimated true probability derived from other data or a sharp bookie. Worth noting is that calculating the implied probability straight from the bookmaker odds doesn't take the bookmaker edge into account and requires all outcomes for an event to calculate the true underlying implied probability.

Supported odds formats

This converter supports decimal odds, fractional odds, American odds, Hong Kong odds, Malay odds, Indonesian odds, and implied probability percentage.

Why use an odds converter?

Bookmakers and betting exchanges use different odds formats depending on region and market. An odds converter makes it easier to compare prices, understand implied probability, and analyze bets more accurately across different sportsbooks.

Popular Odds Conversions

These are some of the most commonly used betting odds conversions.