Blackjack risk of ruin calculator.

Method: The calculator applies published or stated probability assumptions to editable values. It does not forecast an outcome or validate a wager.

Inputs used: Bankroll in betting units = 100 units; Estimated player edge = -0.5 %; Standard deviation per hand = 1.15 units; Hands planned = 500 hands

Assumptions: The result uses the values, units and options shown in the input snapshot.

Scope and warnings: Approximation only. Risk of ruin depends on bet sizing, bankroll definition, table rules, count accuracy, variance, stopping rules and changing bet spreads. Educational probability tool only. Casino games have a negative expected return for typical players; results vary widely in the short term. This is not gambling or financial advice. Follow local laws and seek support if gambling is causing harm. Rounding and excluded real-world terms can make an external result differ.