Probability · Casino

Blackjack Calculator

Build your hand and the dealer’s upcard to see the dealer’s bust odds, the most likely final totals, and the mathematically recommended basic-strategy move.

Dealer upcard

Your hand

Recommended move

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Your total

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Dealer bust %

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with this upcard

Dealer 21 %

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Win if stand

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Win if hit

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How the odds are computed

P(outcome) = favorable card combinations / total card combinations

The dealer’s final distribution is found by exhausting every possible draw sequence from a six-deck shoe (dealer stands on all 17s), weighted by card counts remaining after your hand. Your “win if hit” figure assumes you draw exactly one card and then stand. The recommendation comes from a condensed version of classic basic strategy.

🎲 Basic strategy

Hit, stand, double, split or surrender — the mathematically best move for your hand.

🎲 Dealer bust odds

The classic “upcard bust percentages” recomputed live for your exact hand.

📈 Dealer total spread

See how likely the dealer is to finish on 17, 18, 19, 20 or 21.

💰 Soft hand aware

Aces are handled correctly with soft/hard totals.

Know the odds everywhere

Betting math is everywhere — check the odds or parlay calculators next.

Odds Calculator