Work out blackjack basic strategy edge instantly with clear inputs, formula shown and shareable results.
Starting from a roughly 0.18% edge for single deck with dealer standing on soft 17, each extra deck adds about 0.02%, dealer hitting soft 17 adds 0.22%, and 6 to 5 blackjack adds a full 1.39%. The 6 to 5 payout is by far the most expensive rule change, turning a near-even game into one with a worse edge than most other table games.
House edge
edge = base edge + deck penalty + soft 17 penalty + blackjack payout penalty
Hourly cost
loss per hour = edge / 100 x hands per hour x average bet
edge = base edge + deck penalty + soft 17 penalty + blackjack payout penalty. Starting from a roughly 0.18% edge for single deck with dealer standing on soft 17, each extra deck adds about 0.02%, dealer hitting soft 17 adds 0.22%, and 6 to 5 blackjack adds a full 1.39%.
The 6 to 5 payout is by far the most expensive rule change, turning a near-even game into one with a worse edge than most other table games.
Enter number of decks, dealer hits soft 17, blackjack pays, hands per hour. The defaults shown are a realistic worked example — swap in your own figures to get a result you can use.