Convert running count to true count for optimal betting
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Key concepts at a glance
True count = Running count ÷ Decks remaining. With RC +12 and 3 decks left, TC = +4. True count normalizes the running count to account for how many cards are left. This is essential for accurate betting decisions. TC +1 means roughly break-even, TC +2 gives about 0.5% player edge, TC +3+ signals maximum betting.
Essential knowledge for card counters
Common questions about true count
Running count alone does not tell you the strength of your advantage. A +10 running count means very different things with 5 decks remaining vs 1 deck remaining. True count normalizes this by dividing by decks remaining, giving you a standardized measure of advantage that can be used for consistent betting decisions.
Watch the discard tray. Each deck is roughly 2 inches thick. With a 6-deck shoe, if the discard tray shows 2 inches (1 deck), you have 5 decks remaining. Practice at home with decks until you can estimate within half a deck. Some counters use the number of rounds played instead.
Most betting ramps start increasing at TC +1 or +2. A common approach: TC ≤ 0 = minimum bet, TC +1 = 2 units, TC +2 = 4 units, TC +3 = 8 units, TC +4+ = maximum spread. The exact ramp depends on your bankroll, risk tolerance, and casino heat considerations.
Deeper penetration (more cards dealt before shuffle) increases true count reliability and profitability. With 50% penetration, you rarely see high true counts. With 80% penetration, you see more extreme counts and can bet with more confidence. Seek games with at least 75% penetration.
Yes, many basic strategy plays change based on true count. These are called "index plays" or "deviations." Common ones: Insurance at TC +3, stand on 16 vs 10 at TC 0, stand on 12 vs 3 at TC +2. Learning the "Illustrious 18" deviations adds significant value.