Bankroll Management
Kelly Criterion Calculator
Optimize your bet sizing mathematically. Manage variance and capitalize on your edge using the Kelly Criterion.
Model Presets:
55%
0.25
2.10
$1000
$
⚠️ No edge detected. Kelly says don't bet.
⚠️ Full Kelly exceeds 25%. Use fractional Kelly to manage variance.
Recommended Sizing & Edge Breakdown
f* = (bp - q) / b Full Kelly Bet %
0.00%
Fractional Kelly Bet %
0.00%
Recommended Bet Size
$0.00
Expected Edge
0.00%
Implied: 0.00%
Kelly Sizing vs Max Responsible Exposure
Full Kelly Fractional Kelly Max Responsible (5%)
Kelly depends on a defensible probability estimate and a positive expected edge. Estimation error can make the suggested fraction too large. Compare the exact price and set an affordable loss limit.
Compare sportsbooks
Partner links
1win Sportsbook: compare the quoted price and exact market rules
What to check first → Visit 1win 18+ · Terms on site
Stake Sportsbook: compare sports markets and settlement rules
What to check first → Visit Stake 18+ · Terms on siteCheck the exact market, settlement rules and availability in your country. Offers depend on your country and account; current terms are on the operator’s site. A model result does not establish a betting edge.