KK vs KJ: Preflop Equity & Odds
| Hand | Win | Tie | Equity |
|---|---|---|---|
| KK (Pocket Kings) | 89.0% | 1.2% | 89.6% |
| KJ (King-Jack) | 9.8% | 1.2% | 10.4% |
Suited vs offsuit: KJ
| Matchup | Win | Tie | Equity |
|---|---|---|---|
| KJs | 13.7% | 1.2% | 14.3% |
| KJo | 8.5% | 1.2% | 9.1% |
How KK vs KJ unfolds by street
Pocket Kings (KK) is still ahead on 98% of flops against KJ, and the lead survives to the turn on 95%. KJ takes the lead on the other 2% of flops, almost always by flopping a set. These figures come from full board enumeration, not a simulation.
| Street | KK still ahead | KJ flipped the lead |
|---|---|---|
| Flop | 98% | 2% |
| Turn | 95% | 5% |
KK vs KJ mixes a pair with an overlapping overcard, so an out on each side is already in someone's hand. KK wins 89.0%, KJ wins 9.8%, and 1.2% of boards chop. That blocking effect is why KK is a firmer 9.1-to-1 favorite than a straight pair-vs-two-overcards race.
Translate that into a decision and it's simple pot-odds math: counting split pots as half, KK carries 89.6% equity and KJ 10.4%. Against a pot-sized shove you need about 33% to call and about 25% versus a half-pot bet — so KJ needs real fold equity, not just its raw share, to justify stacking off.
How you play KK vs KJ depends on which side you hold. With KK you're not crushing, so keep the pot controllable and take the 89.0% edge to showdown when you can; with KJ, your equity is enough to continue with initiative but thin enough that bloating the pot out of position is a trap.
KK vs KJ FAQ
Who wins KK vs KJ preflop?
KK (Pocket Kings) is the favorite, winning 89.0% of all runouts, while KJ (King-Jack) wins 9.8%. The remaining 1.2% are split pots. Counting splits as half, KK's preflop equity is 89.6%.
How often does KJ beat KK?
KJ wins 9.8% of the time all-in preflop against KK — roughly 1 in 10 — so it needs good pot odds or fold equity to get the money in profitably.
Is KK vs KJ a good spot to get all-in?
For KK, yes — a 89.6% favorite should happily commit, especially with fold equity. For KJ at 10.4%, it depends on the price: enough to continue with initiative, but thin enough that stacking off out of position is usually a leak.
Does KK hold up against KJ after the flop?
KK is still ahead on 98% of flops and stays ahead through the turn on 95% of boards; KJ takes the lead on the other 2% of flops. These are exact figures from full board enumeration.
Run any matchup in the free equity calculator · AA VS AQ · AA VS AJ · KK VS KQ · QQ VS AQ · QQ VS KQ · QQ VS QJ