Last Updated: July 14, 2013

Bingo Calculator

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Reason #2 why the Wizard likes Bovada: No-hassle practice games

Most online casinos spend more effort trying to separate you from your money than they do trying to give you a good experience. They have all kinds of popup windows, they usually make you download their software, and if they do offer play-in-browser games then you have to register an account before you can play. And if you register they start sending you emails trying to get you to deposit real money.

But Bovada is different. They have no popup windows at all, and their practice games play right in your browser, with no download, and no registration required. You don't even have to give up your email address. It couldn't be simpler: just one click and you're playing the game.

I wish all online casinos showed this much respect for their players. Other casinos practically ask for your first born child to play for free. Meanwhile Bovada is patient and does not twist anybody's arm to play for real money. You can play as long as you like for free with no obligation. The real-money games are available if that's your preference, but if not, you can play the free practice games for as long as you like without hassle.

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This calculator estimates the most likely number of bingo cards in play according to the distribution of balls called and the number of winners. To use, just enter number of balls called, according to the letter, and the number of winners. Then click the type of game. The number of cards shown should be considered as a rough guess.

This calculator is not fully monkey-proofed. If you put in impossible or unreasonable input, don't expect to get a reasonable answer.

Description Value







Win Probability =

Expected cards =


  • Single Bingo: Any one line. May use free square
  • Double Bingo: Any two lines. May use free square
  • Triple Bingo: Any three lines. May use free square
  • Single Hardway: Any one line. May not use free square
  • Double Hardway: Any two lines. May not use free square
  • Triple Hardway: Any three lines. May not use free square
  • Six Pack: Any two by three rectangle. May use free square
  • Nine Pack: Any three by three square.
  • Letter X: Both diagonals.
  • Single Postage Stamp: Any 2x2 square in corner of card.
  • Double Postage Stamps: Any two 2x2 squares in corner of card.
  • Triple Postage Stamps: Any three 2x2 squares in corner of card.
  • Quadruple Postage Stamps: Any four 2x2 squares in corner of card.
  • Coverall: Cover entire card.
  • Double Daub: Cover entire "double daub" card, which has two distinct numbers per square.
  • Win Probability: Probability of any one card winning.
  • Expected Cards: Expected number of cards in play.
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