What is Kelly Criterion in betting?

Kelly Criterion is a formula that suggests stake size based on odds, edge, and bankroll.

Why use half Kelly or quarter Kelly?

Reduced Kelly staking lowers volatility and drawdowns compared to full Kelly sizing.

BetSigy AI

Plan position size with full, half, and quarter Kelly scenarios.

Calculate suggested stake size from bankroll, odds, and your win probability estimate. Includes full Kelly, half Kelly, and quarter Kelly sizing.

Decimal odds Estimated win probability (%) Bankroll

Kelly % (full)

Edge per unit

Full Kelly Stake

Half Kelly Stake

Quarter Kelly Stake