The five calculations behind every profitable bet — expected value, fair (no-vig) prices, arbitrage splits, Kelly staking and odds conversion. No signup, exact math, same formulas the app runs on 40+ books automatically.
Expected value of a bet from your fair win probability and the offered price.
Strip the bookmaker margin from two- or three-way odds to reveal the fair price.
Check two or three prices for a guaranteed profit and split your stake exactly.
Optimal bet size from your edge and bankroll, with half- and quarter-Kelly presets.
American ↔ decimal ↔ fractional ↔ implied probability, instantly.
Each tool here answers one question about one price. EdgeFinder answers all of them about every price at once — it de-vigs 40+ sportsbooks continuously, flags every +EV line and arbitrage, and sizes stakes for you. Prefer to learn the theory first? Start in the betting math library.