House Edge: 0.5% · Best Odds in the Casino

Blackjack Strategy Guide

Blackjack is the only casino game where your decisions directly affect the outcome. With perfect basic strategy, the house edge drops to just 0.5% — the best odds of any table game. This guide covers everything from rules and card values to an interactive strategy chart, card counting, variant comparisons, and the best online casinos for blackjack.

Blackjack Rules

The objective is simple: beat the dealer's hand without exceeding 21. Here is how the game works:

Card Values

2-10Face value

Jack, Queen, King10

Ace1 or 11 (whichever benefits the hand)

Game Flow

1Place your bet before any cards are dealt.
2You and the dealer each receive two cards. One dealer card is face up.
3Choose to Hit, Stand, Double Down, Split, or Surrender.
4The dealer reveals their hole card and plays according to house rules.
5Closest to 21 wins. Blackjack (Ace + 10) pays 3:2. Tie is a push.

Player Actions

Hit

Take another card. You can hit as many times as you want until you stand or bust (exceed 21).

Stand

Keep your current hand. The dealer then plays their hand.

Double Down

Double your bet and receive exactly one more card. Best used on strong starting hands.

Split

If you have a pair, split into two separate hands with an additional bet equal to the original.

Surrender

Forfeit half your bet and end the hand immediately. Only available as the first action on some tables.

Insurance

A side bet (half your original bet) that the dealer has blackjack when showing an Ace. Usually a bad bet.

Basic Strategy Chart

This chart shows the mathematically correct decision for every hand combination. It assumes a standard 4-8 deck game where the dealer stands on soft 17. Hover or tap any cell for a detailed explanation.

Hover or tap any cell to see the recommended action and explanation.

Hard Totals

Hand	2	3	4	5	6	7	8	9	10	A
17+	S	S	S	S	S	S	S	S	S	S
16	S	S	S	S	S	H	H	R	R	R
15	S	S	S	S	S	H	H	H	R	H
14	S	S	S	S	S	H	H	H	H	H
13	S	S	S	S	S	H	H	H	H	H
12	H	H	S	S	S	H	H	H	H	H
11	D	D	D	D	D	D	D	D	D	H
10	D	D	D	D	D	D	D	D	H	H
9	H	D	D	D	D	H	H	H	H	H
8	H	H	H	H	H	H	H	H	H	H
5-7	H	H	H	H	H	H	H	H	H	H

Soft Totals (Ace counted as 11)

Hand	2	3	4	5	6	7	8	9	10	A
A,9	S	S	S	S	S	S	S	S	S	S
A,8	S	S	S	S	D	S	S	S	S	S
A,7	D	D	D	D	D	S	S	H	H	H
A,6	H	D	D	D	D	H	H	H	H	H
A,5	H	H	D	D	D	H	H	H	H	H
A,4	H	H	D	D	D	H	H	H	H	H
A,3	H	H	H	D	D	H	H	H	H	H
A,2	H	H	H	D	D	H	H	H	H	H

Pairs

Hand	2	3	4	5	6	7	8	9	10	A
A,A	P	P	P	P	P	P	P	P	P	P
10,10	S	S	S	S	S	S	S	S	S	S
9,9	P	P	P	P	P	S	P	P	S	S
8,8	P	P	P	P	P	P	P	P	P	R
7,7	P	P	P	P	P	P	H	H	H	H
6,6	P	P	P	P	P	H	H	H	H	H
5,5	D	D	D	D	D	D	D	D	H	H
4,4	H	H	H	P	P	H	H	H	H	H
3,3	P	P	P	P	P	P	H	H	H	H
2,2	P	P	P	P	P	P	H	H	H	H

Legend:HitStandDoubleSplitSurrender

Card Counting Explained

Card counting is a technique that tracks the ratio of high to low cards remaining in the deck. When the remaining deck is rich in high cards (10s and Aces), the player has an advantage. Here is the most common system:

Hi-Lo Count System

Cards 2, 3, 4, 5, 6

Low cards (good for dealer)

Cards 7, 8, 9

Neutral cards

-1

10, J, Q, K, Ace

High cards (good for player)

Important: Online Limitations

Card counting is not practical for online blackjack. RNG games shuffle after every hand, and live dealer games use continuous shuffling machines or shuffle after 50% deck penetration. The technique only works with deep penetration (75%+) in physical casinos. We include this section for educational purposes only.

Blackjack Variants Compared

Not all blackjack games are created equal. The variant you choose directly affects the house edge. Here is how the most popular versions compare:

Variant	Decks	House Edge	Key Features
Classic Blackjack	1-8	0.50%	Standard rules, most widely available
European Blackjack	2	0.62%	No hole card, dealer stands on soft 17
Vegas Strip	4	0.35%	Dealer stands on soft 17, double after split allowed
Atlantic City	8	0.36%	Late surrender, double after split, dealer stands on soft 17
Spanish 21	6-8	0.40%	No 10-value cards, bonus payouts, late surrender, double after split
Pontoon	8	0.38%	British variant, 5-card trick wins, different terminology
Blackjack Switch	6-8	0.58%	Play two hands, swap top cards between them
Double Exposure	8	0.69%	Both dealer cards face up, blackjack pays even money

Best Casinos for Online Blackjack

We evaluated blackjack variant selection, table limits, RNG and live dealer options, and bonus terms. These casinos offer the best blackjack experience online:

BitStarz

Rating: 9.5/10Bonus: Up to 5 BTC + 180 Free Spins

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Stake.com

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22Bet

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BC.Game

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LeoVegas

Rating: 9.0/10

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PlayOJO

Rating: 8.9/10Bonus: 80 Free Spins No Wagering

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HexaBet

Rating: 8.8/10Bonus: 100% up to $1,000

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Casumo

Rating: 8.8/10

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Roobet

Rating: 8.7/10Bonus: $500 + 100 Free Spins

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7Bit Casino

Rating: 8.6/10

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Roulette Guide

European vs American odds, betting systems, and strategy.

Baccarat Guide

Rules, scoring, Punto Banco, and optimal strategy.

Live Casino

Play blackjack with real dealers in 4K live streams.

Frequently Asked Questions

The best strategy is basic strategy -- a mathematically proven set of decisions for every possible hand combination. It tells you when to hit, stand, double down, split, or surrender based on your cards and the dealer's upcard. Following basic strategy reduces the house edge to approximately 0.5%.

Card counting is impractical in online blackjack because RNG games shuffle after every hand, and live dealer games use continuous shuffling machines or shuffle after 50% deck penetration. Card counting requires deep deck penetration to be effective, which online blackjack does not provide.

No. Insurance is a side bet that the dealer has blackjack when showing an Ace. It pays 2:1 but the true odds are worse than 2:1 in virtually all scenarios. The house edge on insurance is approximately 7.4%, making it one of the worst bets at the table. Basic strategy always says decline insurance.

With perfect basic strategy, the house edge in blackjack is approximately 0.5% for a standard multi-deck game. Without strategy, the edge can climb to 2-4%. Specific rules like dealer hitting or standing on soft 17, number of decks, and doubling restrictions all affect the exact edge.

Always split Aces and 8s. Never split 10s or 5s. Split 2s, 3s, 6s, and 7s against a dealer 2-7. Split 4s only against dealer 5-6 if double after split is allowed. Split 9s against everything except 7, 10, or Ace. Our interactive strategy chart covers every scenario.

Yes, when played at licensed casinos. Online blackjack uses certified Random Number Generators (RNG) tested by independent labs like eCOGRA and GLI. Live dealer blackjack uses real cards and dealers for additional transparency. Always play at regulated, licensed casinos.

A soft 17 is a hand totaling 17 that includes an Ace counted as 11 (e.g., Ace + 6). The hand is 'soft' because the Ace can also count as 1, making it 7. Some casinos require the dealer to hit on soft 17 (H17), which slightly increases the house edge by about 0.2% compared to standing (S17).

Hand	2	3	4	5	6	7	8	9	10	A
17+	S	S	S	S	S	S	S	S	S	S
16	S	S	S	S	S	H	H	R	R	R
15	S	S	S	S	S	H	H	H	R	H
14	S	S	S	S	S	H	H	H	H	H
13	S	S	S	S	S	H	H	H	H	H
12	H	H	S	S	S	H	H	H	H	H
11	D	D	D	D	D	D	D	D	D	H
10	D	D	D	D	D	D	D	D	H	H
9	H	D	D	D	D	H	H	H	H	H
8	H	H	H	H	H	H	H	H	H	H
5-7	H	H	H	H	H	H	H	H	H	H

Hand	2	3	4	5	6	7	8	9	10	A
A,9	S	S	S	S	S	S	S	S	S	S
A,8	S	S	S	S	D	S	S	S	S	S
A,7	D	D	D	D	D	S	S	H	H	H
A,6	H	D	D	D	D	H	H	H	H	H
A,5	H	H	D	D	D	H	H	H	H	H
A,4	H	H	D	D	D	H	H	H	H	H
A,3	H	H	H	D	D	H	H	H	H	H
A,2	H	H	H	D	D	H	H	H	H	H

Hand	2	3	4	5	6	7	8	9	10	A
17+	S	S	S	S	S	S	S	S	S	S
16	S	S	S	S	S	H	H	R	R	R
15	S	S	S	S	S	H	H	H	R	H
14	S	S	S	S	S	H	H	H	H	H
13	S	S	S	S	S	H	H	H	H	H
12	H	H	S	S	S	H	H	H	H	H
11	D	D	D	D	D	D	D	D	D	H
10	D	D	D	D	D	D	D	D	H	H
9	H	D	D	D	D	H	H	H	H	H
8	H	H	H	H	H	H	H	H	H	H
5-7	H	H	H	H	H	H	H	H	H	H

Hand	2	3	4	5	6	7	8	9	10	A
A,9	S	S	S	S	S	S	S	S	S	S
A,8	S	S	S	S	D	S	S	S	S	S
A,7	D	D	D	D	D	S	S	H	H	H
A,6	H	D	D	D	D	H	H	H	H	H
A,5	H	H	D	D	D	H	H	H	H	H
A,4	H	H	D	D	D	H	H	H	H	H
A,3	H	H	H	D	D	H	H	H	H	H
A,2	H	H	H	D	D	H	H	H	H	H

Hand	2	3	4	5	6	7	8	9	10	A
17+	S	S	S	S	S	S	S	S	S	S
16	S	S	S	S	S	H	H	R	R	R
15	S	S	S	S	S	H	H	H	R	H
14	S	S	S	S	S	H	H	H	H	H
13	S	S	S	S	S	H	H	H	H	H
12	H	H	S	S	S	H	H	H	H	H
11	D	D	D	D	D	D	D	D	D	H
10	D	D	D	D	D	D	D	D	H	H
9	H	D	D	D	D	H	H	H	H	H
8	H	H	H	H	H	H	H	H	H	H
5-7	H	H	H	H	H	H	H	H	H	H

Hand	2	3	4	5	6	7	8	9	10	A
A,9	S	S	S	S	S	S	S	S	S	S
A,8	S	S	S	S	D	S	S	S	S	S
A,7	D	D	D	D	D	S	S	H	H	H
A,6	H	D	D	D	D	H	H	H	H	H
A,5	H	H	D	D	D	H	H	H	H	H
A,4	H	H	D	D	D	H	H	H	H	H
A,3	H	H	H	D	D	H	H	H	H	H
A,2	H	H	H	D	D	H	H	H	H	H

Hand	2	3	4	5	6	7	8	9	10	A
17+	S	S	S	S	S	S	S	S	S	S
16	S	S	S	S	S	H	H	R	R	R
15	S	S	S	S	S	H	H	H	R	H
14	S	S	S	S	S	H	H	H	H	H
13	S	S	S	S	S	H	H	H	H	H
12	H	H	S	S	S	H	H	H	H	H
11	D	D	D	D	D	D	D	D	D	H
10	D	D	D	D	D	D	D	D	H	H
9	H	D	D	D	D	H	H	H	H	H
8	H	H	H	H	H	H	H	H	H	H
5-7	H	H	H	H	H	H	H	H	H	H

Hand	2	3	4	5	6	7	8	9	10	A
A,9	S	S	S	S	S	S	S	S	S	S
A,8	S	S	S	S	D	S	S	S	S	S
A,7	D	D	D	D	D	S	S	H	H	H
A,6	H	D	D	D	D	H	H	H	H	H
A,5	H	H	D	D	D	H	H	H	H	H
A,4	H	H	D	D	D	H	H	H	H	H
A,3	H	H	H	D	D	H	H	H	H	H
A,2	H	H	H	D	D	H	H	H	H	H

Hand	2	3	4	5	6	7	8	9	10	A
17+	S	S	S	S	S	S	S	S	S	S
16	S	S	S	S	S	H	H	R	R	R
15	S	S	S	S	S	H	H	H	R	H
14	S	S	S	S	S	H	H	H	H	H
13	S	S	S	S	S	H	H	H	H	H
12	H	H	S	S	S	H	H	H	H	H
11	D	D	D	D	D	D	D	D	D	H
10	D	D	D	D	D	D	D	D	H	H
9	H	D	D	D	D	H	H	H	H	H
8	H	H	H	H	H	H	H	H	H	H
5-7	H	H	H	H	H	H	H	H	H	H

Hand	2	3	4	5	6	7	8	9	10	A
A,9	S	S	S	S	S	S	S	S	S	S
A,8	S	S	S	S	D	S	S	S	S	S
A,7	D	D	D	D	D	S	S	H	H	H
A,6	H	D	D	D	D	H	H	H	H	H
A,5	H	H	D	D	D	H	H	H	H	H
A,4	H	H	D	D	D	H	H	H	H	H
A,3	H	H	H	D	D	H	H	H	H	H
A,2	H	H	H	D	D	H	H	H	H	H

Hand	2	3	4	5	6	7	8	9	10	A
17+	S	S	S	S	S	S	S	S	S	S
16	S	S	S	S	S	H	H	R	R	R
15	S	S	S	S	S	H	H	H	R	H
14	S	S	S	S	S	H	H	H	H	H
13	S	S	S	S	S	H	H	H	H	H
12	H	H	S	S	S	H	H	H	H	H
11	D	D	D	D	D	D	D	D	D	H
10	D	D	D	D	D	D	D	D	H	H
9	H	D	D	D	D	H	H	H	H	H
8	H	H	H	H	H	H	H	H	H	H
5-7	H	H	H	H	H	H	H	H	H	H

Hand	2	3	4	5	6	7	8	9	10	A
A,9	S	S	S	S	S	S	S	S	S	S
A,8	S	S	S	S	D	S	S	S	S	S
A,7	D	D	D	D	D	S	S	H	H	H
A,6	H	D	D	D	D	H	H	H	H	H
A,5	H	H	D	D	D	H	H	H	H	H
A,4	H	H	D	D	D	H	H	H	H	H
A,3	H	H	H	D	D	H	H	H	H	H
A,2	H	H	H	D	D	H	H	H	H	H