Bankroll & risk
🧮 Kelly Criterion
Optimal stake size from your edge — full, half & quarter Kelly.
Result
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How it works
The formula
f* = (b·p − q)/b, where b=dec−1, q=1−p. Stake = f*×bankroll.
Example: 1000, 2.10, 52% → f*≈4.6%, full Kelly ~46, half ~23.
FAQ
Questions
Should I use full Kelly?
Most pros use half or quarter Kelly to reduce variance and estimation risk.
What if edge is negative?
Kelly returns ≤0 — don’t bet.
More tools
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Risk of Ruin / Drawdown
Probability of losing your bankroll given edge, odds and bet size.
⏱️
Session Budget
How long a bankroll lasts at a given bet size and pace.
📊
Staking Plans Simulator
Simulate Martingale, Fibonacci, D’Alembert, flat — with a bankroll chart.
For entertainment & education only. OSOTOTO does not offer gambling. Results are mathematical estimates — variance means real outcomes differ. 18+. Need support? Self-check.
