Bankroll & risk
⏱️ Session Budget
How long a bankroll lasts at a given bet size and pace.
Result
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How it works
The formula
Expected rounds = budget/(bet×(1−RTP)). Playtime = rounds/rph.
Example: 200 budget, 2/round, 96% RTP, 400/h → ~2500 rounds ≈ 6.25h expected.
FAQ
Questions
Why include RTP?
It sets the average cost per round, so budget lasts longer than bet÷budget alone.
Is this guaranteed?
No — it’s the expected value; variance makes real sessions shorter or longer.
More tools
Related calculators
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Kelly Criterion
Optimal stake size from your edge — full, half & quarter Kelly.
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Risk of Ruin / Drawdown
Probability of losing your bankroll given edge, odds and bet size.
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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.
