Poker Calculators

Pot odds, equity, expected value and bankroll. 9 calculators for cash games and tournaments. Board games and general probability sit under Games.

Pot odds is where the most common arithmetic slip in poker lives. If $40 is in the middle and you have to call $10, the break-even equity is not 10 over 40. It is 10 over 50, because your own call joins the pot before you can win it. A 4-to-1 price needs a fifth, not a quarter, and players who leave their own chips out of the sum talk themselves into calls that lose slightly, every single time.

Bankroll management is why most players quit, and it usually gets mistaken for a skill problem. A genuine winner at 5 big blinds per 100 hands still runs into 20,000-hand stretches at break-even or worse. Cash games want 25 to 40 buy-ins. Pot-Limit Omaha wants more, since its variance runs one and a half to two times Hold’em. Large-field tournaments want 100 or more, because even solid regulars go a hundred entries between cashes.

Risk of ruin has a closed form for cash play, and the page shows it.