Blackjack Strategy Guides
Every guide below answers one practical question with stated rules, calculated examples, and links to the underlying tools or sources. Read the answer, then drill it in the free trainer until it's automatic.
Free tools
Blackjack odds calculatorModeled win probability for any hand vs any up-card
Strategy quiz20 hands, scored against the book
House edge calculatorWhat your table's rules really cost
Payout calculator3:2 and 6:5 payouts for any bet
EV by true countInteractive heatmap — watch deviations flip as the count moves
Open datasets3,300-row EV and dealer-outcome data, CSV/JSON, CC BY 4.0
Start here
How to play blackjackRules, table flow, and your first five strategy rules
How to bet in blackjackChips, table limits, and why systems don't work
Blackjack card valuesWhat every card is worth, from 2 to the ace
What happens when the dealer busts?Who wins, and the "both bust" catch
How to win at blackjackThe honest math and the 4 real levers
Blackjack cheat sheetFree printable strategy card, H17 & S17
Blackjack odds of winningEvery probability that matters
Why do you always lose?The honest math, and the fixable leaks
Do betting systems work?Martingale & friends, tested with math
Blackjack termsEvery word on the felt, defined
Best odds & comparisons
Expected value chartModeled EV for every hand vs every dealer card
Casino games ranked by house edgeThe best and worst bets in the house
Blackjack vs. roulette vs. crapsWhich game has the best odds
The decisions
When to hit or standThe core decision, for every stiff total
Do you hit 16 against a 10?The closest call in blackjack, settled
When to split pairsAces, eights, and the ones everyone gets wrong
When to double downThe chart's most profitable moves
Should you ever take insurance?The 3-line math says no
Even money, explainedInsurance wearing a friendlier name
The table rules
What "dealer hits soft 17" meansH17 vs S17 and the three plays that change
3:2 vs 6:5 blackjackThe most expensive rule on the felt
When to surrenderThe four hands worth folding for half
How many decks matterSingle deck vs 8 — the real numbers
Side bets: Perfect Pairs & 21+3Exact odds, computed honestly
Spanish 21 strategyThe variant that removes the 10s
Is blackjack rigged?No — here's the real dealer advantage
Going deeper
How to count cards (Hi-Lo)The complete beginner's system
Does card counting work?Yes — and whether it's legal
Deviations: the Illustrious 18When counters break the book
The MIT Blackjack TeamThe real story behind the movie "21"
Dealer bust odds by up-cardThe numbers behind every decision
The full strategy chartPrintable cheat sheet, H17 & S17
Reading builds knowledge. Reps build skill.
The trainer deals real hands, shows your live odds on every button, and grades each decision against the book.