Blackjack Card Counting Simulator & Trainer — Free

Card Counting Lab is a realistic blackjack simulator built for one purpose: learning to beat the game the mathematical way. Play on a real multi-deck shoe with configurable casino rules, get instant basic-strategy coaching on every decision, and train Hi-Lo card counting with a live running count, true-count conversion and a bet-ramp coach that tells you exactly when the shoe is worth more money.

What you can practice

• Realistic table play — 1-8 decks, S17/H17, 3:2 or 6:5 blackjack, DAS, resplits, late surrender, insurance, peek or ENHC.
• Basic strategy coaching — every hit, stand, double, split and surrender is checked against the rule-correct chart, with an explanation when you deviate.
• Hi-Lo card counting — visible count for learning, hidden count with pop quizzes for training, speed-count drills, true-count conversion drills and bet-ramp drills.
• EV on every action — see the expected value of each move both by the book and recalculated from the exact cards left in the shoe, including live deviation alerts.
• Autopilot & million-hand simulations — watch a perfect player run whole shoes, then run 10,000 to 1,000,000 hands to see the true edge of counting versus flat betting, including bankroll survival and drawdowns.

More free tools

• Interactive blackjack basic strategy chart — rule-aware and printable.
• Roulette simulator with a Betting System Lab — stress-test Martingale & friends over 100,000 sessions.
• Baccarat simulator with a live Big Road — real punto banco rules and a million-hand Odds Lab.
• Craps simulator — learn the pass-line cycle and measure the true line-bet edges.

Frequently asked questions

Is card counting legal?

Counting cards in your head is legal in the United States — it is simply skilled play. Casinos are private businesses and may refuse service to suspected counters. Using any device or app at a live table is a crime in most gaming jurisdictions, which is why Card Counting Lab is a home-training tool only.

How does Hi-Lo card counting work?

Every card you see gets a tag: 2-6 count +1, 7-9 count 0, and 10s, faces and aces count -1. The sum is the running count. Divide it by the number of decks remaining to get the true count, which tells you when the shoe favors the player and how much to bet.

Is this blackjack simulator realistic?

Yes. It deals from a real multi-deck shoe with a cut card, supports S17/H17, double after split, resplits, late surrender, insurance and American or European hole-card rules, and the dealer follows the configured rules exactly. Strategy advice adapts to the rules you pick.

How much of an edge does card counting give?

With a 1-12 bet spread on a 6-deck H17 game at 75% penetration, our built-in million-hand simulations show roughly a +0.5% edge on money wagered for the counter versus about -0.5% for a flat-betting basic-strategy player — around 15 units gained per 1,000 hands, with brutal variance along the way.

Is Card Counting Lab free?

Yes — the full simulator, the counting trainer, the drills and the simulation lab are free. Chips are fictional practice units with no monetary value, and there is no real-money gambling of any kind.

Learn card counting: How to Count Cards · Hi-Lo System · True Count · Bankroll & Spread · Illustrious 18 · Is Counting Illegal?

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Card Counting Lab uses fictional practice chips with no monetary value. It is not a casino, offers no real-money play, and is not affiliated with any gambling operator. Card counting with your head is legal; casinos may still refuse service. Never use devices or apps at a live table — that is illegal in most jurisdictions. 18+.