Free tool

Blackjack hand calculator and solver.

Pick your two cards and the dealer's up-card. You'll see what each move wins or loses on average per 100 chips bet, and why the best one is best.

Your first card
Your second card
Dealer shows
You · hard 16
Dealer
Surrender−50
Hit−53.98
Stand−54.04
Double−107.97
Average result of each move per 100 chips bet

Surrender. You get half your bet back. Played out, 16 against a 10 loses about 54 chips for every 100 bet, more than the 50 you give up.

Table rules
Numbers make more sense at a table.Play it at a coached table

A blackjack solver, not a cheat calculator

People search for a "blackjack cheat calculator". What they want is the mathematically best play for the hand in front of them, and that's what this works out. It's a blackjack solver: it takes your two cards and the dealer's up-card, plays out every card that could come next, and ranks hit, stand, double, split and surrender by what each one wins or loses on average. Nothing here guesses the next card. The top move is basic strategy, the best you can do without counting.

Two examples, with 6 decks, the dealer standing on soft 17 and late surrender allowed. Hard 16 against a 10: standing loses about 54 chips per 100 bet, hitting very slightly less, and surrendering loses exactly 50, so surrender is best. With no surrender, hit. 6 and 5 against a 6: hitting wins about 33 chips per 100, doubling about 67. Doubling puts twice as much on a hand that's already ahead.

From one hand to every hand

Working out one hand at a time is how you learn why a move is right. To play a whole shoe without stopping, use the blackjack basic strategy chart: every hand against every dealer card on one page, for the rules at your table. Then check what stuck with the basic strategy quiz.

Questions people ask

What does the number next to each move mean?
Its expected value: what that move wins or loses on average per 100 chips bet, if you played this exact spot many times. The best move has the highest number, even when every number is negative.
Why does 16 against a 10 lose whatever I do?
The dealer will usually finish on 17 or more. Standing wins only when they bust (about 23%), and hitting busts you often. Hitting loses a little less; surrendering, where allowed, loses less again.
How are these numbers worked out?
Exactly, by working through every card that could come next, for you and the dealer, with an endless shoe. That matches published charts for 6 and 8 decks.
Is a blackjack calculator cheating?
No. It doesn't predict cards or see the dealer's face-down card. It works out the best play from the cards everyone can already see, which is what basic strategy is. Learning that at home is studying the game.
Can I use a blackjack calculator at a casino table?
Don't count on it. Many casinos let you look at a printed strategy card as long as it doesn't slow the game down, but phones and other devices at the table are another matter: casinos often ban them, and in some places using a device to help you play is against the law. Check the rules where you play. The chart is small enough to learn by heart.

More free tools

Basic strategy chartThe best move for every hand against every dealer card, for the rules at your table.Basic strategy quizHit, stand, double, split or surrender? Missed hands come back until you get them.Dealer bust oddsHow often the dealer busts, and where they end up, for every up-card.House edge calculatorHow the table rules change the odds, and what that costs per hour.Card counting trainerCount down a deck with Hi-Lo, against the clock, then check yourself.True count calculatorRunning count and decks left in, true count and bet size out.Daily handOne blackjack decision a day. See the maths, compare with everyone.

Blindspot Blackjack is free, play-money blackjack training. No real-money gambling.