Blackjack is the most popular casino card game in the world, and here you can play free online Blackjack in your browser with no download and no sign-up. You start with a $100 bankroll and one clear mission: beat the dealer hand after hand until you double your money to $200. Each round you place a bet and receive two cards while the dealer shows one card face up and keeps a hidden hole card; you then draw or hold, trying to get as close to 21 as possible without going over, before the dealer plays out their hand by fixed house rules.
The game descends from the Spanish veintiuna — twenty-one — a game old enough that Miguel de Cervantes, the author of Don Quixote, wrote about card sharps playing it around 1600. The name blackjack came much later, from an American casino bonus that paid extra when a winning twenty-one included the ace of spades and a black jack. The modern game changed forever in 1962, when mathematician Edward Thorp published Beat the Dealer and proved the house could be beaten by card counting — a book that sent casinos scrambling to add decks and tighten their rules.
Three difficulty levels change the shoe and the dealer's behaviour, so casual players and aspiring card counters alike will find a challenge, on desktop or mobile.
Build a hand totalling as close to 21 as you can without busting, and finish higher than the dealer. Grow your $100 bankroll to $200 to beat the house.
Click a chip to place your bet, then use Hit to draw a card, Stand to hold, or Double to double your wager and take exactly one more card. Number cards score face value, face cards score 10, and an Ace automatically counts as 11 or 1 — whichever helps you most.
A natural Blackjack — an Ace plus a ten-value card in your first two cards — pays 3:2. Any other win pays even money, a tie pushes and returns your stake, and going over 21 loses the bet immediately. On Hard, the dealer hits soft 17 and deals from a six-deck shoe.
Basic strategy goes a long way: stand on 17 or more, always hit 11 or less, and double down on 10 or 11 when the dealer shows a weak up-card. Watch that up-card closely — a dealer 4, 5 or 6 busts often, so stand on lower totals and let the house break itself. Chasing a stiff 15 or 16 against a strong dealer card is where bankrolls go to die.
What is a natural Blackjack?
An Ace and a ten-value card as your first two cards. It pays 3:2 and beats any other hand totalling 21.
When should I double down?
Classic basic strategy says double on a total of 10 or 11 when the dealer's up-card is weaker, since you have a strong chance of drawing a ten-value card.
Is this Blackjack free to play?
Yes — unlimited free hands in your browser, with no download, no sign-up and no real-money stakes.
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