BJack.io — Blackjack Calculator & Basic Strategy Chart
BJack.io is a blackjack calculator and basic strategy chart for expected value (EV), blackjack odds, card counting and real-time shoe tracking.
Unlike a static blackjack strategy chart, BJack calculates decisions using the actual cards remaining in the shoe. Enter cards as they appear, and the calculator updates the shoe composition, probabilities, count and expected value. Visit BJack.io
Features
Blackjack EV & Strategy Calculator
Calculate the expected value (EV) of every available blackjack action — Hit, Stand, Double, Split and Surrender. BJack compares each option using the current hand, table rules and remaining shoe composition.
Real Shoe Tracking
Track cards as they are dealt and calculate probabilities from the actual remaining shoe. Cards can be entered using All 52, Rank → Suit, or Rank Only modes, depending on the level of detail required.
1–8 Decks
Configure 1, 2, 4, 6 or 8 decks. The selected number of decks affects remaining-card probabilities, true count, EV and strategy calculations.
Card Counting Systems
BJack supports six blackjack card counting systems: Hi-Lo, KO (Knock-Out), Zen Count, Omega II, Wong Halves and Red 7. The calculator tracks the running count and, where applicable, calculates the true count based on the decks remaining.
Basic Strategy & Deviations
Generate blackjack basic strategy based on the selected table rules and current shoe composition. Supported rules include H17 / S17, Double, Double After Split (DAS), Surrender, Resplitting, Split Aces, 3:2 / 6:5 blackjack payouts and 1–8 decks.
Blackjack Odds & Probabilities
Calculate dealer and player probabilities, including dealer 17–21 and bust, player bust probability, win / push / loss probabilities, insurance EV and the expected value of available actions.
Open the Blackjack Calculator
Blackjack Basic Strategy Chart
The BJack.io Basic Strategy Chart generates the recommended Hit, Stand, Double and Split decisions for your selected game configuration.
Choose the number of decks and table rules, including H17 / S17, Double After Split (DAS), Surrender, Resplitting and blackjack payouts. The chart supports 1, 2, 4, 6 and 8 decks.
BJack uses the same calculation engine for its strategy, EV and probability calculations, allowing the chart to work alongside the full blackjack calculator.
The chart is designed specifically for blackjack players who want to learn and practice card counting mentally. It provides a simple and focused way to study blackjack strategy, understand how different rules affect decisions, and practice making decisions without relying on a physical calculator at the table.
The tool is completely free to use and features a clean, comfortable color scheme designed to make the strategy chart easy to read and study for extended periods.
Start with BJack.io
Learn blackjack basic strategy, practice card counting, and explore blackjack odds, EV and shoe composition with a free set of interactive tools.
♠ Open Blackjack Calculator →
♣ View Basic Strategy Chart →
BJack.io · Free Blackjack Calculator · Basic Strategy · Card Counting · Shoe Tracking
