Texas Hold'em odds calculator
Pick your first card
How to read your results
The calculator deals the rest of the hand thousands of times and counts how often each result happens. Three numbers come back, and they always add up to 100%.
Win, tie and lose
Win is how often your five best cards finish ahead of everyone else. Tie is how often you finish level and share the pot — this is common when the board itself makes the best hand. Lose is everything else.
Equity
Equity is the single number most players care about: it is your share of the pot, counting a two-way tie as half a pot and a three-way tie as a third. If your equity reads 71%, then on average you collect 71% of the chips in the middle if the hand runs all the way to showdown.
Why the numbers move a little each time
Each run is a fresh sample of 20,000 hands, so the figures shift by a few tenths of a percent between runs. That wobble is the honest cost of a simulation. Treat 71.2% and 71.5% as the same answer, and never read more precision into the number than it has.
Outs, pot odds and equity explained
What is an out?
An out is a card still in the deck that turns a losing hand into a winning one. Hold A♥ K♥ on a 9♥ 4♥ 2♠ flop and nine hearts remain, so you have nine outs to a flush — plus the aces and kings that would give you top pair. Counting outs is the fastest mental shortcut in poker.
The rule of 2 and 4
Multiply your outs by 4 on the flop, or by 2 on the turn, to estimate your chance of getting there. Nine outs on the flop gives roughly 36%; the exact figure is 34.97%. Nine outs on the turn gives roughly 18%; the exact figure is 19.57%. Close enough to use at the table, and the calculator is here for when it matters.
Pot odds — the price you are being offered
Pot odds compare the chips you must put in with the chips you stand to collect. If the pot holds 100 chips and it costs you 50 to continue, you are paying 50 to win 150, which is 33%. Continue when your equity is higher than that percentage, and pass when it is lower. Equity is what you have; pot odds are what you are being charged for it.
Worked examples
Each of these is a real spot you can load into the calculator above with one tap. Opponents are treated as unknown hands, exactly as the tool treats them.
1. Pocket aces before the flop
A♣ A♦ — no board — 1 opponent
The best starting hand in Hold'em wins around 85% of the time against one unknown hand. Add two more opponents and it falls to about 64% — still the best hand at the table, but now it loses more than a third of the time. That single change is why crowded pots are so much harder to control.
2. A flush draw with two overcards
A♥ K♥ on 9♥ 4♥ 2♠ — 1 opponent
This hand has not made a pair yet, and it is still a favourite at roughly 71% against one unknown opponent. Nine hearts, three aces, three kings and a sneaky A-2-3-4-5 straight draw add up fast. Against three opponents it drops to about 51%, because someone now often holds a piece of that flop.
3. A flopped set against a crowd
8♣ 8♦ on 8♥ 5♣ 2♠ — 3 opponents
Three of a kind on a dry flop holds up about 85% of the time even against three unknown hands, and around 94% heads-up. Compare that with the pocket aces in example 1, which collapse to 64% against the same three opponents. A made hand survives a crowd; a big pair alone does not.
Common spots at a glance
Every figure below comes from the same engine that powers the calculator, against unknown opponents.
| Your hand | Board | Opponents | Your equity |
|---|---|---|---|
| A♣ A♦ | — | 1 | 85% |
| A♣ A♦ | — | 3 | 64% |
| A♠ K♠ | — | 1 | 67% |
| J♠ T♠ | 9♥ 8♣ 2♦ | 1 | 55% |
| A♥ K♥ | 9♥ 4♥ 2♠ | 1 | 71% |
| A♥ K♥ | 9♥ 4♥ 2♠ | 3 | 51% |
| 8♣ 8♦ | 8♥ 5♣ 2♠ | 1 | 94% |
| 8♣ 8♦ | 8♥ 5♣ 2♠ | 3 | 85% |
Frequently asked questions
How accurate is this poker odds calculator?
Accurate to roughly half a percent. It simulates 20,000 random run-outs per answer, which puts the typical error near 0.35%. The hand evaluator behind it was checked against a brute-force count of all 1,712,304 possible boards for a known match-up and agreed to within 0.06%.
What does equity mean in poker?
Equity is your share of the pot right now, expressed as a percentage. It counts wins in full and split pots in fractions, so a hand that always chops heads-up has 50% equity. It answers one question: if this hand were played to the end many times, how many chips would you average?
How do I count my outs?
Count the cards left in the deck that would give you the best hand, then check none of them are already visible. A flush draw has nine outs, an open-ended straight draw has eight, and two overcards have six. Discard any out that would also complete a stronger hand for an opponent.
What are pot odds and how do I use them?
Pot odds are the price of continuing, written as a percentage: the chips you put in divided by the total pot after you put them in. Paying 50 into a 150-chip pot is 33%. Compare that number with your equity from this calculator — continue when equity is higher, pass when it is lower.
Why do my opponents' cards stay hidden?
Because that is the situation you are actually in at the table. The calculator deals each opponent a random hand from the remaining deck on every one of the 20,000 run-outs, which is the honest way to model a hand you cannot see. Naming a specific opponent hand would give you an answer you could never have in play.
How this calculator works
There is no server and no account. When you pick a card, your browser removes it from a 52-card deck, deals the missing board and opponent cards 20,000 times using a Fisher-Yates shuffle, scores every seven-card hand, and counts the results. The work happens in a background thread so the page never freezes, and nothing you enter leaves your device.
The scoring engine is a plain JavaScript module covered by an automated test suite, including exhaustive enumeration checks where the full answer can be calculated rather than sampled. Known tie rules — kickers, split pots, the A-2-3-4-5 wheel, straight flushes over four of a kind — each have their own test.
Built by the OBOS Poker studio as a free study tool for Texas Hold'em players. It is for learning hand maths only.