Successful betting starts with creating your own probabilities. If you analyze a match and determine that Team A has a 60% chance of winning, how do you know if the bookmaker’s odds are good?
You need to convert your percentage into “Fair Odds”. If the bookmaker offers odds higher than your calculated fair odds, you have a mathematical edge. Use this tool to flip your percentage predictions into actionable decimal odds.
Probability to Odds
How to Use the Calculator
Use this tool to benchmark the market:
- Enter Your Probability: Estimate the percentage chance of the outcome (e.g., 75%).
- Get Fair Odds: The tool shows the minimum odds you should accept (e.g., 75% = 1.33).
- Compare: Go to the bookmaker.
- If the bookie offers 1.40 (Higher than 1.33), it’s a good bet.
- If the bookie offers 1.25 (Lower than 1.33), it’s a bad bet.
Why is this important?
Betting without knowing the “Fair Odds” is like buying a house without knowing its market value. By converting your confidence level (%) into a price (Odds), you can objectively measure value rather than guessing.
Frequently Asked Questions (FAQ)
What are the fair odds for a 50/50 chance?
For a 50% probability (like a coin toss), the fair decimal odds are 2.00 (or +100 American). If a bookmaker offers 1.90 on a coin toss, they are taking a margin.
How do I convert percentage to odds manually?
Simply divide 100 by your percentage.
Example: 100 ÷ 40% = 2.50.
Does this calculator include the bookie margin?
No, this calculator gives you the True Odds (Zero Margin). This is actually better for you, because it sets a strict baseline. You want to find bookmaker odds that beat these true odds.