MODELS ONLINE / DATA PROVIDER · NOT A BOOKMAKER / EVERY PICK TIMESTAMPED & GRADED / 12 LEAGUES MODELLED
Logo BET BETTER PRO TERMINAL
Log in

Kelly Criterion Stake Calculator

Stake the mathematically optimal amount for your edge and bankroll — and dial it back to half or quarter Kelly to tame the variance.

—
Recommended stake
—
% of bankroll
—
Full Kelly %
—
Your edge
—

Kelly fraction = (b·p − q) ÷ b, where b = decimal odds − 1. A negative result means no edge — don't bet.

We compute the Kelly stake for every pick

Each model pick already carries its calibrated probability and suggested stake. See tonight's sized plays — free.

View today's best bets

Kelly — quick answers

What is the Kelly Criterion?

A formula that sizes bets to maximise long-term bankroll growth: fraction = (b·p − q) ÷ b.

Full, half or quarter?

Most pros use half or quarter Kelly — far less volatile and forgiving if your probability estimate is slightly off.