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PLO8 calculator
Half the pot plays for low, so O8 equity is scoop and quarter rates.
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PLO8 splits every pot two ways: the best high hand takes half, the best qualifying 8-or-better low takes the other half, and the high hand scoops when no low qualifies. This calculator computes that split for 2 to 6 four-card hands, enumerating every flop, turn and river runout exactly. Preflop it runs Monte Carlo to a ±0.3% target: this page enumerates only when 20,000 boards or fewer remain, and even a six-way pot leaves more than that. Past total pot share it breaks out how often each hand scoops, wins only one half, or gets quartered, which is the number that separates a raise from a fold with a bare A-2. It also tracks how often a low is possible on the remaining runouts. Free, no signup; the same tool switches to Big O and Big O6 with one click, and to high-only games and double board bomb pots.
PLO8 Calculator FAQ
How it works
Enter 2 to 6 four-card hands (the O8 game is preselected on this page), then add a flop, turn or river and any dead cards. Results stream live: total pot share per hand plus scoop, hi-side, lo-side, both-sides and quartered rates. Exact enumeration on any board; preflop exact when 20,000 boards or fewer remain, Monte Carlo to a ±0.3% target otherwise. Copy share link reproduces the exact spot.
Are PLO8, O8 and Omaha hi-lo the same game?
Same split-pot rules, different betting. O8 is Omaha 8-or-better; PLO8 is its pot-limit form, the standard in online cash games and most tournaments; limit O8 survives in mixed games as the O in HORSE. In all of them the best high hand takes half, the best qualifying low takes half, the high scoops when no low qualifies, and every hand uses exactly two hole cards for each side. Equity is a property of the cards, not the betting structure, so everything this calculator reports applies to all three.
When does a low qualify in PLO8?
Five distinct ranks, all 8 or lower, built from exactly two hole cards and three board cards. Aces play low, straights and flushes do not count against you, and the board itself must show three distinct ranks 8 or lower or nobody can make a low. Lows compare from the top card down - 8-7-6-2-A loses to 8-6-5-4-3 - and the wheel, 5-4-3-2-A, is the nut low. On partial boards, the line under the equity bar shows the share of runouts where a low is still possible and where one actually gets made.
What does getting quartered mean?
Winning only a tied half. The classic PLO8 spot: you and one opponent both hold A-2, the board makes your identical nut lows, and they win the high. They collect 75% of the pot, you collect 25% - half the money in, a quarter back. The Quartered column counts exactly these runouts. Check it before overplaying a bare A-2-x-x: with no high potential and no counterfeit protection, that hand's real pot share in multiway pots runs far below what holding the nut low suggests.
What is counterfeiting in PLO8?
Your low card pairing the board. Hold A-2 on a 4-6-7 flop and you have the nut low, 7-6-4-2-A. Now a 2 hits the river: the deuce on board belongs to everyone, your own 2 adds nothing, and an opponent with A-3 makes 6-4-3-2-A to beat you. Your cards never changed; a card you already held demoted them. This is why A-2-3-x plays a full tier above bare A-2-x-x - when the 2 counterfeits, the 3 rebuilds the nut low. Set the spot up here and add the river card to watch the equity move.
Which starting hands play best in PLO8?
Aces with wheel cards, suited. The O8 table at /big-o-starting-hand-rankings scores all 16,432 four-card classes under real hi-lo scoring, and the top of it is a wall of A-A-2-x and A-2-3-x hands with suits backing the high side. High-only strength collapses: A-A-T-T double-suited, the best hand in regular PLO, ranks 798th. The pattern that matters is two-way potential - aces block the nut low while making it, wheel cards open scoop routes, and a suit turns chops into scoops. Look a hand up there, then bring the exact matchup here.
Does the math change for PLO8 tournaments or limit O8?
The equity does not - a 62% pot share is 62% whether the betting is pot-limit, limit or a tournament shove. What changes is which number to read first. In tournament all-ins, total pot share converts straight to chips, so the headline number decides calls. In limit O8, pots go more ways and quartering is the profit killer, so weight Scoop and Quartered over raw share. If cards were exposed, add them as dead cards - they come out of every runout.