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Blackjack bankroll and session calculator
Enter a bet and a number of hands. You get the average result and the range most sessions end in, for perfect basic strategy.
Inputs
Table rules
The bet and number of hands are only an example, not a suggestion. The range uses a normal approximation with the spread of one hand from our own simulation (1.16 bets, measured for 6 decks, dealer hits soft 17, 3:2; other rules change it a little).
Why the range matters more than the average
Over a short session the swings are much larger than the house edge. That is why a session can end well above the average, and why it says nothing about the next one. The more hands you play, the closer your average per hand gets to the house edge, but the total swing in money still grows.
Set the limit before you play
Decide how much you can afford to lose in one session and stop when it is gone. Money you need for bills is never part of a bankroll. Free help is listed on the responsible gambling page.
Other calculators
All of them run on the same engine as the strategy chart.
House edge calculator
The casino's edge for your exact rules, and what it means for your bet.
Open →Hit or stand calculator
Every move's average result for any hand against any dealer up card.
Open →3:2 vs 6:5 payout calculator
What a blackjack pays at 3:2, 6:5 and even money – and what 6:5 costs.
Open →Dealer bust odds
How often the dealer busts, and lands on 17 to 21, for each up card.
Open →Risk of ruin calculator
The chance of losing your whole bankroll before you reach a goal.
Open →