Texas Hold'em Odds Calculator
Calculate Texas Hold'em poker odds, equity, and outs for any drawing hand situation.
Formula:Equity ≈ Outs × 2 (one street) or Outs × 4 (two streets)
Cards that improve your hand
Cards left to come
Usually 47 (flop) or 46 (turn)
Try These Examples
Quick-start with common scenarios
Understanding Poker Odds
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.
Frequently Asked Questions
What is the Rule of 2 and 4?
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%.
How do I count my outs?
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.
When should I call with a draw?
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!
What are implied odds?
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.
How do blockers affect odds?
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.
How this works
Calculations follow the published mathematics of the game — combinatorics for cards, probability theory for dice, and expected-value accounting for wagers. Results are verified against independent references (primarily Wizard of Odds). No calculation here is an opinion or recommendation; it is arithmetic applied to the rules of the game.
What this tool can’t do
When to consult a professional
This tool computes probability and expected value. It is not a betting system and cannot predict the outcome of any individual wager. If gambling is causing problems for you or someone you know, call the National Problem Gambling Helpline at 1-800-GAMBLER.
Sources
- [1]Wizard of Odds — Michael Shackleford, ASAIndustrywizardofodds.comAccessed Apr 21, 2026
Actuary; widely cited casino-game probability reference. Used for house-edge and EV verification.
- [2]National Council on Problem GamblingOfficial sourcencpgambling.orgAccessed Apr 21, 2026
Responsible-gambling guidance and 1-800-GAMBLER helpline.
Joseph OrdunaFounder & Software Engineer
Full-stack software engineer specializing in embedded systems, web architecture, and AI/ML. Founder of Practical Web Tools. Built the gesture-controlled drone IP acquired by KD Interactive (Aura Drone, sold on Amazon).