Hand odds / KK vs JJ

KK vs JJ: odds and equity

In short

KK wins 81.3% of the time against JJ all in before the flop, JJ wins 18.2%, and they split the pot 0.4% of the time. That makes KK a big favourite, about 4 to 1.

KK

81.5%

vs

JJ

18.5%

Equity: win% plus half of the 0.4% split pots. KK is a big favourite, about 4 to 1.

What the flop does to it

When no J comes on the flop (91.8% of flops), KK has 87.1% equity going to the turn. When one does, KK drops to 19.3%.

JJ is drawing to two cards, its own rank, so this is mostly about whether a set comes. Straights and flushes make up most of the rest of JJ's wins.

When this all-in happens in push/fold

At 10BB in 6-max, the Button shoves KK always and the Big Blind calls with JJ always, so this exact all-in comes straight off the charts.

How often each hand shoves or calls in our solved 6-max chip-EV charts. A row with both columns high is a spot where this exact all-in is correct for both players. See every chart.

Common questions

Who is the favourite, KK or JJ?
KK. All in preflop it has 81.5% equity against JJ: 81.3% wins plus half of the 0.4% split pots. That's a big favourite, about 4 to 1.
What happens on the flop?
When no J comes on the flop (91.8% of flops), KK has 87.1% equity going to the turn. When one does, KK drops to 19.3%.
When does KK vs JJ happen in push/fold?
At 10BB in 6-max, the Button shoves KK always and the Big Blind calls with JJ always, so this exact all-in comes straight off the charts.
How were these odds worked out?
By counting every possible five-card board for every combination of suits: 36 card combinations for KK vs JJ, 1,712,304 boards each. The numbers are exact, not simulated.

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