Blackjack Strategy Calculator
Get the mathematically optimal play for every blackjack hand. Select your hand and the dealer's upcard to see whether you should Hit, Stand, Double Down, or Split.
Your Hand
Recommended Action
Basic Strategy Quick Reference — Hard Totals
| Hand | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | A |
|---|---|---|---|---|---|---|---|---|---|---|
| 8 | H | H | H | H | H | H | H | H | H | H |
| 9 | H | Dh | Dh | Dh | Dh | H | H | H | H | H |
| 10 | Dh | Dh | Dh | Dh | Dh | Dh | Dh | Dh | H | H |
| 11 | Dh | Dh | Dh | Dh | Dh | Dh | Dh | Dh | Dh | Dh |
| 12 | H | H | S | S | S | H | H | H | H | H |
| 13 | S | S | S | S | S | H | H | H | H | H |
| 14 | S | S | S | S | S | H | H | H | H | H |
| 15 | S | S | S | S | S | H | H | H | Rh | Rh |
| 16 | S | S | S | S | S | H | H | Rh | Rh | Rh |
| 17 | S | S | S | S | S | S | S | S | S | Rs |
| 18 | S | S | S | S | S | S | S | S | S | S |
| 19 | S | S | S | S | S | S | S | S | S | S |
| 20 | S | S | S | S | S | S | S | S | S | S |
| 21 | S | S | S | S | S | S | S | S | S | S |
Blackjack Strategy Calculator
Get the optimal play for any blackjack hand based on basic strategy.
How It Works
Enter your hand total and the dealer's upcard. The calculator tells you whether to Hit, Stand, Double Down, or Split based on mathematically optimal basic strategy.
When to Use
During live or online blackjack sessions to make the statistically best decision on every hand.
Pro Tips
- Always split Aces and 8s
- Never split 10s or 5s
- Double down on 11 against dealer 2-10
How to Use the Blackjack Strategy Calculator
Select your hand (two cards) and the dealer's visible upcard from the interactive chart above. The calculator instantly shows the optimal play: Hit, Stand, Double Down, or Split. You can also browse the full strategy chart to study all possible hand combinations at a glance.
Understanding the Recommendations
Each recommendation minimizes the house edge for that specific situation. "Hit" means take another card. "Stand" means keep your current total. "Double" means double your bet and take exactly one more card. "Split" means separate your pair into two hands. The chart is color-coded for quick reference during play.
Tips for Practicing Basic Strategy
Start by memorizing the hard totals (no Ace) since they make up the majority of hands. Then learn soft totals (with an Ace counted as 11), and finally pair splits. Practice with free online blackjack games until the correct plays become automatic. Even occasional errors add to the house edge, so consistency matters.