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Dealer bust odds.

How often the dealer busts, and where they end up, for each up-card. It's the reason you play hands of 12 to 16 so differently against a 6 and against a 10.

Up-card1718192021Bust
214.0%13.5%13.0%12.4%11.8%35.4%
313.5%13.0%12.6%12.0%11.5%37.4%
413.0%12.6%12.1%11.6%11.1%39.4%
512.2%12.2%11.8%11.3%10.8%41.6%
616.5%10.6%10.6%10.2%9.7%42.3%
736.9%13.8%7.9%7.9%7.4%26.2%
812.9%35.9%12.9%6.9%6.9%24.5%
912.0%12.0%35.1%12.0%6.1%22.8%
1012.1%12.1%12.1%37.1%3.7%23.0%
A18.9%18.9%18.9%18.9%7.8%16.7%

Chances of the dealer's final total from each up-card, with 6 decks. Against a 10 or an ace, the dealer has already checked for blackjack (so these rows leave it out). A 5 or a 6 busts over 40% of the time; a 7 or higher usually makes 17 or more.

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Questions people ask

Which dealer card busts most?
A 5 or a 6: the dealer busts about 42% of the time. That's why you stand on 12 to 16 against them and double more.
What is the dealer's overall bust rate?
About 28% of all hands, across every up-card.
Why does an ace bust so rarely?
An ace can count as 11 or 1, so the dealer often makes a soft total and gets another chance. Against an ace the dealer busts only about 17% of the time after checking for blackjack.

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