Free tool
Free betting calculators
Three tools for the three questions that actually matter: is there value, how much should I stake, and what is this price in my format.
🧮 Expected value (EV) calculator
Does the price pay more than the real risk? The only number that decides whether a bet is worth making.
📐 Kelly Criterion calculator
How much to stake. The optimal fraction of your bankroll, with half-Kelly and quarter-Kelly modes.
🔄 Odds converter
Decimal, fractional and American, plus the implied probability behind each price.
💰 Bankroll manager
Log every bet and track profit, ROI and how your bankroll grows. Saved in your browser, no sign-up.
🧠 Try the gambeta.ai AI
Free picks with the model's probability, the odds and a suggested stake already worked out.
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