What is blackjack basic strategy?

Basic strategy is the set of plays that minimizes the house edge in blackjack. It is derived from computer simulations of millions of hands and tells you the correct action (hit, stand, double, split, surrender) for every possible player hand vs. dealer upcard combination.

Does this chart work for all blackjack variants?

No. It is built for 4 to 8 decks, dealer stands on soft 17, double after split allowed and late surrender offered. If the dealer hits soft 17, also double 11 against an ace, double soft 18 against 2 and soft 19 against 6, and surrender 15, 17 and a pair of 8s against an ace. Without double after split, hit 2,2 and 3,3 against 2 and 3, hit 4,4 against 5 and 6, and hit 6,6 against 2. Single-deck games change more plays.

What does "soft" hand mean?

A soft hand contains an Ace counted as 11 without busting. For example, Ace+6 is a soft 17. Because the Ace can also count as 1, you cannot bust by taking one card — this changes the optimal strategy compared to a hard 17.

When should I surrender?

Late surrender (when available) is correct for hard 16 vs. dealer 9, 10, or Ace, and hard 15 vs. dealer 10. Surrendering gives up half your bet but saves money long-term in those high-risk spots.

Why should I always split Aces and 8s?

Splitting Aces gives two chances to hit 21. Splitting 8s converts a terrible hard 16 into two hands each starting at 8, which play much better against any upcard. These are the two splits that always apply regardless of dealer upcard.

Should I take insurance or even money?

No. Basic strategy never takes insurance or even money. Insurance is a side bet that the dealer has blackjack, and it loses money over time unless you are counting cards and know the deck is rich in tens.

Does basic strategy guarantee that I win?

No. It keeps the house edge as low as the rules allow, under half a percent in good multi-deck games, but the casino still has the edge over many hands. Any single session can still end up or down.

Blackjack Basic Strategy

Look up the statistically optimal blackjack play — hit, stand, double, split, or surrender — for any hand vs. any dealer upcard.

Basic strategy is the play with the best expected value for each hand against the dealer's upcard.

Find Optimal Play

Hand Type

Player Hand

Dealer Upcard

Hard Totals — Basic Strategy

Multi-deck, dealer stands on soft 17. Click any cell to look up that play.

S — Stand H — Hit D — Double (hit if not allowed) P — Split R — Surrender (hit if not allowed) DS — Double (stand if not allowed)

Quick answer

Basic strategy is the play with the best expected value for each hand against the dealer's upcard. This chart assumes 4 to 8 decks, the dealer stands on soft 17, double after split is allowed and late surrender is offered. Always split aces and 8s, double hard 11 against 2 through 10, and stand on hard 12 against 4, 5 and 6.

Examples

Your hand	Dealer shows	Play
Hard 16	9, 10 or A	Surrender, else hit
Hard 12	2 or 3	Hit
Hard 11	2 to 10	Double
Soft 18 (A,7)	3 to 6	Double, else stand
Soft 18 (A,7)	9, 10 or A	Hit
Pair of 9s	7, 10 or A	Stand

Pick your hand type, your total and the dealer upcard.

Summary

Blackjack basic strategy is the mathematically optimal way to play every hand based on your cards and the dealer's upcard. Following basic strategy reduces the house edge to under 0.5% in standard games. Use this chart as a quick reference before or during play to make the correct decision every time.

How it works

Select your hand type: hard total, soft total (ace + card), or a pair.
Choose your total (or pair rank) from the player hand buttons.
Click the dealer's upcard (2 through Ace).
The tool instantly displays the optimal action with color-coded guidance.
The full strategy grid is always visible for at-a-glance reference.

Use cases

Learn basic strategy before your first casino visit.
Quiz yourself on correct plays to build muscle memory.
Quickly look up the right move during an online blackjack session.
Compare hard vs. soft hand decisions for the same total.
Study how the dealer upcard changes the correct play.
Understand when to double down for maximum expected value.
Verify whether to split pairs like 8s, Aces, or 5s.

Frequently Asked Questions

Last updated: 2026-06-11 · Reviewed by Nham Vu