Kelly Criterion Calculator illustration

Kelly Criterion Calculator

Computes the Kelly-optimal fraction of your bankroll for a bet, the resulting stake and the expected growth rate, including fractional Kelly variants.

Notes

  • Betting more than full Kelly lowers long-run growth and raises variance: there is nothing to gain past the peak.
  • Gambling math is informational only, not betting advice. Gambling involves risk of loss; only play with money you can afford to lose, and only if you are 18+ (or of legal age where you live).

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