updated regularly – latest review: September 2026
Blackjack calculator
Find Your Best Move
Tap a card to change it, then pick its value. The best basic-strategy move updates instantly.
Show the full strategy chart
The chart follows your table rules above. Your current hand is outlined.
Watch: How to Use the Blackjack Calculator
A 30-second walkthrough of every step.
How to Use the Blackjack Strategy Calculator
Our blackjack strategy calculator tells you the best basic-strategy move for any starting hand. Because it shows the answer as soon as you pick your cards, there is no button to press. If you are new to the game, read our online casino basics guide first. Alternatively, see Wikipedia’s overview of blackjack for background on basic strategy.
1. Pick your two cards
First, tap your first card on the table. Then choose its value from the row of buttons underneath (A, 2–10, J, Q or K). After that, the calculator moves straight on to your second card and then to the dealer’s card. You can also tap any card on the table at any time to change it.
2. Pick the dealer’s upcard
Next, choose the dealer’s visible card in the same way. Meanwhile, the highlighted card on the table shows which card you are currently changing.
3. Read the recommended move
The best move appears in the middle of the table as a coloured badge. In addition, a short description of your hand appears underneath. The possible moves are:
- Hit (red): take another card.
- Stand (green): keep your total and end your turn.
- Double (amber): double your bet and take exactly one more card. If the table does not let you double, the note under the badge tells you whether to hit or stand instead.
- Split (blue): split a pair into two hands and place a second bet equal to the first.
- Surrender (grey): give up the hand and get half your bet back. However, this only appears when surrender is switched on.
Adjusting the Table Rules
4. Match the rules to your table (optional)
Use the switches under Table rules to match the game you are playing. The summary next to the heading then shows your current settings.
- Dealer stands on soft 17 is on by default. Turn it off if the dealer hits soft 17.
- Double after split is also on by default. Switch it off if you cannot double on a hand after splitting.
- Surrender allowed is off by default. Turn it on if the table lets you surrender.
- Decks can be set to 1, 2, 4, 6 or 8.
If you are unsure, leave the default settings, because they match most online blackjack tables in the UK.
5. See the full strategy chart
Tap Show the full strategy chart to see every hand at once, split into hard totals, soft totals and pairs. The chart updates when you change the table rules. What’s more, your current hand is outlined so you can see where it sits.
6. Reset and try another hand
Finally, press Reset hand to go back to the starting hand, or simply tap a card and change it.
Quick Examples
These examples use the default table rules unless stated otherwise.
- Ace + 7 (soft 18) against a dealer 9: Hit.
- 10 + 6 (hard 16) against a dealer 6: Stand.
- Pair of 8s against a dealer 5: Split.
- 6 + 5 (hard 11) against a dealer 10: Double.
- 10 + 6 (hard 16) against a dealer 10, with surrender on: Surrender, or hit if surrender is not offered.
- Ace + 7 (soft 18) against a dealer 2, when the dealer hits soft 17: Double, or stand if doubling is not allowed.
Blackjack Strategy Calculator FAQs
What is basic strategy?
Basic strategy is the mathematically best decision for every combination of your hand and the dealer’s upcard. As a result, following it lowers the house edge to its minimum.
Why do J, Q and K have their own buttons?
They all count as 10, so the advice is the same. Even so, separate buttons make it quicker to copy the exact cards you see on screen.
Does the calculator work for live dealer blackjack?
Yes. Just set the table rules to match the live game, and the blackjack strategy calculator will adjust its advice.
Basic strategy gives you the best long-term odds. However, it cannot remove the house edge, so no system guarantees a win. If you are working through a casino bonus, our wagering calculator shows how much play the bonus needs. Always gamble responsibly, and visit GambleAware for free support if you need it.