Want to know the Blackjack odds? Click on the option boxes below to set the rules the way that you wish. Then click on the CALCULATE button. The percentage player advantage using basic strategy will be shown for 1, 2, 3, 4, 6 and 8 decks in the table at the bottom of the page.

Double Down after Split
Double Down soft hand
Double Down on 10, 11 (True for nearly all casinos)
Double Down on 9
Double Down any number of cards
Dealer hits soft 17
No Hole card (Dealer BJ wins all)
Resplit
Resplit Aces
No Ace Splits
Six cards unbusted wins (Six card Charlie)
Blackjack pays 2:1
Late Surrender
Early Surrender

Decks
1
2
3
4
6
8