Blackjack Basic Strategy
Exact computer-optimal play, recomputed in your browser. Hover a cell for the EV of every move.
Decks
1
2
4
6
8
∞
Dealer stands soft 17
Double after split
Resplit pairs
Resplit aces
American (dealer peeks)
Surrender
Running count (Hi-Lo)
H
Hit
S
Stand
D
Double
P
Split
R
Surrender — D/R fall back to the second-best legal move if not allowed.