Kelly Stake Calculator

FREE · NO SIGN-UP · DECIMAL ODDS

BankrollYour win probability (%)Decimal odds

Quarter Kelly (duban's default)25.002.50% of bankroll · capped at 2.5%

Half Kelly70.457.05% of bankroll

Full Kelly140.91maximum growth, brutal variance

1Enter your bankroll, win probability and odds

2Full Kelly maximizes growth but swings hard

3duban sizes at quarter Kelly, capped at 2.5% of bankroll

This is the same math duban's model runs on every priced pick. See the graded record or run a real bet past the model.

Research and analysis, not betting advice. 21+. Bet responsibly.