Blackjack House Edge Calculator
Every blackjack table posts its rules on the felt or a sign. Enter them below to see the house edge you face with perfect basic strategy. A lower number is better for you. Small differences add up: at $25 a hand and 80 hands an hour, each 0.1% costs you about $2 an hour.
House edge: –
These numbers combine published effects of each rule on a base 8-deck game. They are close estimates, not an exact simulation of your table. To practice the right plays for these rules, open the trainer and pick the same rules in Settings.
Which rules matter most
- Blackjack payout. 6:5 adds about 1.4%. Nothing else comes close. Why 6:5 is so bad.
- Dealer hits soft 17. About 0.2%. How H17 costs you.
- Number of decks. One deck instead of eight is worth about 0.5% to you. Decks explained.
- Double after split and surrender. Smaller, but they add up. See double after split and surrender.