Work out exact Texas Hold’em drawing odds from your outs, for one or two cards to come.
Chance of hitting (exact)
How to use this tool
Count the unseen cards that improve your hand.
Choose one card (turn to river) or two (flop to river).
Read the exact hit chance and the chance of missing.
Compare the exact value with the rule-of-2-and-4 estimate.
Formula & worked example
A flush draw with 9 outs after the flop hits by the river about 35.0% of the time; on the next card alone it is about 19.1%.
Limitations — read this before you rely on it
Exact only for the stated unseen-card counts; it does not model opponents’ hands, folded cards or implied odds.
Frequently asked questions
A remaining card that improves your hand to what you expect to be the winner; count only clean outs, not cards that may also help an opponent.
After the flop you hold 2 cards and 3 are on the board, leaving 47 unseen in a 52-card deck.
Multiply outs by 2 for one card or by 4 for two cards as a quick estimate; it is close for small out counts and less accurate for large ones.
No. It assumes unknown cards are random; known folded cards would change the exact count.
Compare this hit chance with the pot odds (the call as a share of the pot) to judge whether a call is profitable; that comparison is a separate decision.