How to use this calculator
- Enter the bookmaker's decimal odds.
- Enter your estimated probability and optional stake.
- Review implied probability, fair odds, EV and stake guidance.
Worked example: Odds of 2.10 imply 47.62%. At a personal estimate of 52%, fair odds are 1.92 and the calculated EV is positive.
Frequently asked questions
Does this calculator guarantee profit?
No. It only calculates the entered assumptions.
Can I use it for real bets?
Use it as an analytical aid and verify every input and market rule.