KJ vs K3s: Odds & Interactive Calculator
| Hand | Win | Tie | Equity |
|---|---|---|---|
| KJ (King-Jack) | 65.9% | 7.6% | 69.7% |
| K3s (King-Three Suited) | 26.5% | 7.6% | 30.3% |
Suited vs offsuit: KJ
| Matchup | Win | Tie | Equity |
|---|---|---|---|
| KJs | 66.9% | 7.3% | 70.6% |
| KJo | 65.5% | 7.7% | 69.4% |
How KJ vs K3s unfolds by street
King-Jack (KJ) is still ahead on 82% of flops against K3s, and the lead survives to the turn on 78%. K3s takes the lead on the other 18% of flops. These figures come from full board enumeration, not a simulation.
| Street | KJ still ahead | K3s flipped the lead |
|---|---|---|
| Flop | 82% | 18% |
| Turn | 78% | 22% |
Share a card and you get a kicker problem — that's KJ vs K3s: KJ wins 65.9%, K3s wins 26.5%, and 7.6% of boards chop. Note the chunky 7.6% chop rate — it surfaces whenever the shared rank plays and the kickers don't. Spots like this are where stacks quietly disappear: the dominated hand can't fold pre and can't outrun the kicker post.
At a final table the raw 69.7% / 30.3% split is only half the story — ICM bends it. As the 30.3% underdog, K3s pays an extra survival premium, so the chip-EV "close enough" call can be a clear ICM fold. The pure equity sets the floor; the payout ladder sets the real price.
The lesson of KJ vs K3s is kicker discipline: K3s is the hand that quietly costs people stacks because it's too strong to fold and too dominated to win. If you hold KJ, get value while you're ahead; if you hold the dominated side, this is the exact spot to find a preflop fold against a tight range.
KJ vs K3s FAQ
Who wins KJ vs K3s preflop?
KJ (King-Jack) is the favorite, winning 65.9% of all runouts, while K3s (King-Three Suited) wins 26.5%. The remaining 7.6% are split pots. Counting splits as half, KJ's preflop equity is 69.7%.
Does the KJ vs K3s probability change all-in preflop?
No. Once both hands are all-in preflop the odds are set by the cards alone — position, stack size and who bet first change nothing. The only thing that moves the number is suits: KJ's equity runs from 68.9% to 70.6% depending on suitedness and which suits the two hands share, which is why different sites quote slightly different figures. It does change once board cards are dealt (KJ leads on 82% of flops) and in multiway pots, where every extra caller takes equity from both hands.
Why is K3s so bad against KJ?
Because they share a card, K3s is drawing to roughly three outs and chops 7.6% of the time — it wins only about 1 in 4. That's the danger of a dominated hand: too strong to fold, too far behind to outdraw, which is how kicker problems quietly cost full stacks.
Does KJ hold up against K3s after the flop?
KJ is still ahead on 82% of flops and stays ahead through the turn on 78% of boards; K3s takes the lead on the other 18% of flops. These are exact figures from full board enumeration.
Run any matchup in the free equity calculator · AK VS A2S · AK VS A3S · AK VS A4S · AK VS A5S · AK VS A6S · AK VS A7S
See also: hand-vs-range preflop equity — your hand against a real opening, 3-bet, or shove range.