Kelly Criterion Calculator

Estimate stake size from bankroll, odds, and your edge.

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Kelly calculation
(1.10×0.52)0.481.10  =  8.36%\dfrac{\normalsize (1.10 \times 0.52) - 0.48}{\normalsize 1.10} \; {\normalsize =} \; {\normalsize 8.36\%}
The Kelly estimate suggests a positive stake for this edge.
Kelly steps
Net odds1.10
Win probability52.00%
Loss probability48.00%
Full Kelly8.36%
Bankroll risk4.18%
Recommended stake$41.82

Frequently Asked Questions

What does the Kelly Criterion calculate?+

The Kelly Criterion estimates what percentage of your bankroll to stake based on odds and your estimated probability edge.

Should I use full Kelly?+

Many bettors use half Kelly or quarter Kelly because full Kelly can create large stake sizes and higher bankroll volatility.

When does Kelly suggest no bet?+

Kelly suggests no stake when your estimated probability does not create a positive edge at the available odds.