Calculator
The pot, the bet, your outs — and whether calling makes money. Any unit works: chips, big blinds or dollars, as long as it's the same throughout.
Enter the pot and the bet to see the price. Add your outs and it will tell you whether to call.
Pot odds are the share of the final pot you're paying for: your call divided by everything that will be in the middle once you've called.
Calling 50 into a pot of 100 that they've bet into: 50 ÷ (100 + 50 + 50) = 25%. Win more than a quarter of the time and calling makes money.
A call buys you one card. If your opponent still has chips, they can bet again on the turn — so the number to hold against the price is your chance of hitting on the next card: outs ÷ unseen cards, or outs × 2 as a shortcut.
The by-the-river figure (outs × 4 on the flop) is only yours for a single payment when someone is all-in. Using it against a one-street price is the most common mistake in drawing maths, and it flatters every draw.
Most draws facing most bets are. That's where implied odds come in: the extra you'll win on later streets when you hit. The calculator tells you how much that has to be. Be honest about it — opponents rarely pay off a whole stack because your flush came in.
The guide works through all of this on one hand, and the outs charts list every number. When you're ready to do it without help, deal yourself a hand.
Pot