Odds are the language of sports betting. Understanding how to read and compare them is the first skill to master.
The 3 Odds Formats
Decimal Odds (European)
The most common format in Europe. The odds represent the multiplier of your stake.
Example: Odds of 2.50 means for a €10 bet, you receive €25 (profit of €15).
Fractional Odds (British)
Mainly used in the UK. Expressed as fractions (e.g., 3/2).
American Odds
Format used in the USA. Positive odds (+150) indicate profit on a $100 bet. Negative odds (-200) indicate the stake needed to win $100.
Converting Between Formats
Use our calculator odds converter to instantly convert between all three formats.
Calculating Implied Probability
Implied probability tells you what chance the bookmaker gives to an outcome. Our calculator rtp helps you evaluate the bookmaker's margin.
Practical Tips
- Always compare odds across multiple bookmakers
- Check the margin using the return-to-player calculator
- Convert to your preferred format for better comparison