Calculate Texas Hold'em poker odds, equity, and outs for any drawing hand situation.
Cards that improve your hand
Cards left to come
Usually 47 (flop) or 46 (turn)
Quick-start with common scenarios
Outs are cards remaining in the deck that will improve your hand to likely the best hand. Counting outs accurately is fundamental to winning poker.
The Rule of 2 and 4: Multiply your outs by 2 for one card to come, or by 4 for two cards. This gives you a quick estimate within 1-2% of the exact probability.
Pot Odds: Compare your equity to the pot odds you're getting. If you have 35% equity and only need to contribute 25% of the pot to call, you have a profitable call.
Discounted Outs: Not all outs are clean. If you're drawing to a flush but the board is paired, some of your flush cards might give an opponent a full house. Always think about what outs could also help your opponents.
Quick equity estimation: multiply your outs by 2 for one street or 4 for two streets. A flush draw (9 outs) on the flop is roughly 9×4=36% to hit by the river. This approximation is accurate within 1-2%.
Count cards that improve your hand to a likely winner. Flush draw = 9 outs (13 suited - 4 you see). OESD = 8 outs. Overcards = 6 outs (but may not be clean). Always discount outs if they might give opponent a better hand.
Call when your equity exceeds the pot odds percentage. If pot is $100 and you call $25, you need 25/(100+25+25)=16.7% equity. With a flush draw at 35%, this is a clear call - you can even raise!
Implied odds consider future money you might win. With a hidden draw like a gutshot, you might call a $20 bet into $60 pot (25% needed) with only 17% equity if you expect to win $100+ more when you hit.
Blockers are cards you hold that reduce opponent's range combinations. Holding A♠ blocks some opponent flush draws if the board is spade-heavy. This is advanced but important for accurate ranging.