Poker Outs & the Rule of 2 and 4: Full Chart (2026)

Poker Outs and the Rule of 2 and 4: Count Your Equity Fast (2026)

The flop. You are holding 8♥7♥ and the board is Q♥9♥2♠. A pretty flush draw. Your opponent bets half the pot, and it comes down to one simple question: call or fold?

The answer hides in a single number, how many cards in the deck make your hand. Those are your outs. Count the outs, turn them into a percentage, compare that to the price of the pot, and the decision takes a couple of seconds. No guessing, no "well, it'll probably get there."

Over the next 10 minutes you will learn to count outs in any hand, turn them into equity with the Rule of 2 and 4, read the full outs chart, and, most importantly, understand when an "out" is not really an out at all. By the end you will have an outs calculator on hand to check yourself. As of 2026 this is still the most basic skill that separates a casual player from a thinking one.

TL;DR: Outs and Equity at a Glance

No time to read it all? Here is the short version.

The Key Numbers Worth Memorizing

The rule in one line: on the flop, multiply your outs by 4; on the turn, by 2. That is your equity estimate in percent. Everything else in this article is about how not to break that rule.

What Is an Out in Poker?

An out is a card that improves your hand to a likely winner. Nothing complicated. You hold four cards to a flush, so any fifth card of that suit completes it. Each of those cards is one out.

A suit holds 13 cards. Two are in your hand, two are on the board, so four are already visible. Nine are left in the deck. There are your 9 outs on a flush draw, and it is a number worth memorizing because it shows up in every other hand.

Outs Are Not Your Equity Yet

A subtle point that trips up new players. Outs and equity are not the same thing. Outs are a count of cards. Equity is the share of the pot that is mathematically yours right now, across all the cards still to come. You convert outs into equity, you do not treat them as equal.

And one more thing: an out only works if it actually gives you the best hand. A card that makes you a second pair against an opponent who already has a set is not an out, it is a trap. We come back to this in the dirty outs section, because that is where half of all lost pots hide.

How to Count Your Outs

The mechanic is simple and always the same:

1. Decide which hand you need to make to win.
2. Count how many cards in the deck give you that hand.

One number to keep in your head: on the flop, 47 cards are unseen (52 minus your two minus three on the board), on the turn, 46. The exact math flows from that (the academic write-up lives in the Out (poker) article on Wikipedia), but for a fast read the Rule of 2 and 4 is enough.

Flush Draws, Straight Draws, Pairs and Overcards

Let us run through the common draws so the counts become automatic:

• Flush draw, 9 outs. 13 cards of the suit minus 4 you can see.
• Open-ended straight draw (OESD), 8 outs. Hold 9♠8♠ on 7♦6♣2♥: four tens and four fives complete you.
• Gutshot (inside straight draw), 4 outs. You need exactly one card in the hole. Hold 9♠8♠ on 7♦5♣2♥: only four sixes fill it.
• Two overcards, 6 outs. A♦K♦ on a dry flop: three aces and three kings give you top pair.
• A pocket pair to a set, 2 outs. The two remaining cards of your rank.
• A set to a full house or quads, 7 outs on the turn.

Combo Draws Without Double-Counting

Here is the trap that makes people overvalue hands. A flush draw (9) plus an open-ended straight draw (8) is 15 outs, not 17. Two cards complete both the straight and the flush of that suit, and you cannot count them twice. Always subtract the overlap: list every card first, then remove the duplicates.

Do not want to count in your head? Punch the hand into the outs calculator and it shows your outs and equity on the spot.

If you would rather watch than read, here is a short breakdown of counting outs and the Rule of 2 and 4:

Backdoor (Runner-Runner) Outs

A backdoor is a draw that needs two cards in a row: two hearts on the turn and the river, say. On its own it is weak, but not zero. A working rule of thumb: a backdoor flush or straight draw is worth about 1.5 outs of equivalent, roughly 3 to 4% of extra equity. Small, but when you have overcards plus a couple of backdoors, those percentage points are often what turns a call profitable.

The Rule of 2 and 4

Pros do not compute exact math at the table. They use a shortcut they call the Rule of 2 and 4 (or, the same thing, the Rule of 4 and 2).

Flop (x4) and Turn (x2)

• On the flop (two cards to come, turn and river): multiply your outs by 4.
• On the turn (one card to come, the river): multiply your outs by 2.

Flush draw on the flop: 9 x 4 = 36%. The exact figure is 34.97%, so the miss is under a percent. Open-ended straight draw on the turn: 8 x 2 = 16%. Fast, in your head, accurate enough to make the decision.

Why 4 and 2, and not something else? Because each out is worth roughly 2% per remaining card (loosely: one out of about 47 to 48 unseen is about 2%). One card to come, multiplier 2. Two cards to come, twice the chance, multiplier 4.

The Correction for More Than 8 Outs

Here is what half the guides leave out: on the flop, multiplying by 4 overshoots when you have a lot of outs. The reason is that x4 acts as if it adds the chances of two cards, but they are dependent. If an out arrives on the turn, it is no longer in the deck for the river.

The correction is simple:

$\text{Equity} \approx (\text{outs} \times 4) - (\text{outs} - 8)$

In plain words: work it out by the Rule of 4, then subtract one percent for every out above eight. For a 15-out combo draw: 15 x 4 = 60, minus 7 = 53%. The exact figure is 54.1%. Without the correction you would think you had 60% and overvalue the hand by seven points.

Why x4 Overshoots (Solomon's Rule)

English-language sources call this same correction Solomon's Rule: "above eight outs, subtract 1% for each extra out." Different name, same arithmetic. It works because it roughly offsets the dependence between the turn and the river. Below eight outs the correction is not needed, x4 is already accurate there.

How Accurate Is It, Really?

Honestly: the Rule of 2 and 4 is an approximation, not gospel. Up to about 8 outs the error is within 1% and you can ignore it. On 9 to 14 outs the Rule of 4 runs a few percent high, so switch on the correction. On 15+ outs, either use x3.5 on the flop or check the exact chart below. For a decision at the table this is plenty, fractions of a percent do not flip a call.

The Complete Outs-to-Equity Chart

Here is the table worth reading for. The exact percentages come from the poker draw probability formula, not eyeballed, and they are cross-checked against the Rule of 2 and 4 plus the correction. If you want to double-check the numbers against an independent source, Wizard of Odds has detailed Texas Hold'em tables.

Reading the Chart at the Table

Do not try to memorize the whole table. Memorize the anchors: gutshot 4 ≈ 16%, open-ended 8 ≈ 32%, flush 9 ≈ 35%, combo 15 ≈ 54%. You interpolate between them by eye. The "corrected" column is for when you have a lot of outs and the Rule of 4 starts to lie. The exact column only matters when the decision is marginal and every percent counts.

Clean vs Dirty Outs: Discount Before You Count

The most expensive mistake in counting outs is treating every out as clean. A dirty (or tainted) out improves your hand but also hands your opponent a bigger one. Formally it is an out, in practice it is a leak on your bankroll.

A Worked Example: When 8 Outs Are Really 6

You hold T♣9♣ on a board of J♦8♦2♠. Open-ended straight draw: four sevens and four queens complete you, 8 outs, about 31.5% by the chart.

But the board is two-tone in diamonds. Two of your outs, the 7♦ and Q♦, complete your straight and at the same time put a third diamond out. If your opponent has a diamond flush draw, those two cards give them a flush that beats your straight. They are dirty.

Discount them: 8 outs minus 2 dirty = 6 clean. Your equity drops from 31.5% to 24.1%. Seven percent is enough to turn a profitable call into a losing one. That is why the discount happens before you multiply by 4, not after.

Want the exact number against a specific opponent range? Run the hand through the equity calculator, it accounts for which cards are genuinely yours and which ones also help your opponent.

From Outs to a Decision: Outs Meet Pot Odds

Outs are not the point in themselves. They exist to answer one question: call or fold. And that is where outs meet pot odds.

The One Rule That Decides It

Turn your outs into equity. Work out the required equity from the price of the pot. Compare.

• Your equity is higher than required, call.
• Lower, fold (unless implied odds bridge the gap, more on that below).

Worked Hand: Flush Draw vs a Half-Pot Bet

Back to 8♥7♥ on Q♥9♥2♠ from the start. Flush draw, 9 outs. The pot is $100 and your opponent bets$50 (half pot). To call, you put in $50 into a pot that becomes$200, so you need $50 /$200 = 25% equity.

Now the subtle part that a lot of people confuse. If you will only see one card (the turn) and then face another decision on the turn, use the x2 rule: 9 x 2 ≈ 19%. Nineteen is less than twenty-five, so on raw pot odds this is a fold.

But if you are all in or guaranteed to see both cards, you have about 35%, and that is an easy call against the 25% required.

The Implied-Odds Adjustment

The gap between 19% and 25% on one card is closed by implied odds, the money you will win on the river when the flush completes. If stacks are deep and your opponent will pay off your river, calling the flop becomes correct even when the pot odds are formally short. How to work that out step by step is in the separate breakdown of pot odds and implied odds. Outs give you equity, pot odds give you the price, implied odds give you the premium for future streets.

Common Mistakes Counting Outs

Outs break down not in the arithmetic but in the carelessness. The three most expensive mistakes:

Double-Counting, Over-Counting Dirty Outs, and Ignoring Position

• Double-counting in combo draws. 9 + 8 = 15, not 17. Overlapping cards count once.
• Treating dirty outs as clean. A card that improves both you and your opponent is half an out at best. Discount it.
• Ignoring multiway pots. Against three opponents your "clean" outs are more often dirty: for one of the three, the card hands a bigger hand. In a multiway pot, discount harder.
• Forgetting position and realization. Out of early position you realize your draw's equity less often, you get bet off it more easily on the next street. A nominal 35% turns into less in play.

Multiway: Why Outs Get Cheaper Against Several Opponents

The Rule of 2 and 4 quietly assumes you are heads-up. In a three-way pot the math shifts, and not in your favor. Even when a card completes your hand, the chance rises that the same card gave one of the two opponents a stronger one. Your nominal 35% flush draw realizes noticeably worse: some of the run-outs that were clean heads-up are now dirty against the table's combined range.

The practical takeaway is simple. In a multiway pot, discount your outs harder and demand a better price than heads-up. A bare flush draw you happily call one on one is often a fold against three bettors, especially when one of them could hold a set drawing to a full house with your very card.

Outs are the foundation, but a foundation does not win the hand alone. It works together with pot odds, ranges and position. Start counting outs honestly, with the discount and without double-counting, and half of your marginal decisions become obvious.