Blackjack basic strategy and edge 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: Number of decks = 6 decks; Dealer hits soft 17 = 0 yes = 1; Double after split available = 1 yes = 1; Resplit pairs available = 1 yes = 1; Late surrender available = 0 yes = 1

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

Scope and warnings: Rule-based estimate, not a complete basic-strategy chart or a guarantee. Penetration, shuffle, decks, splitting restrictions, insurance, dealer procedures and playing errors change real results. 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.