KJ vs 54s: Preflop Equity & Odds
| Hand | Win | Tie | Equity |
|---|---|---|---|
| KJ (King-Jack) | 59.4% | 0.7% | 59.8% |
| 54s (Five-Four Suited) | 39.9% | 0.7% | 40.2% |
Suited vs offsuit: KJ
| Matchup | Win | Tie | Equity |
|---|---|---|---|
| KJs | 61.3% | 0.7% | 61.7% |
| KJo | 58.8% | 0.7% | 59.1% |
How KJ vs 54s unfolds by street
King-Jack (KJ) is still ahead on 68% of flops against 54s, and the lead survives to the turn on 66%. 54s takes the lead on the other 32% of flops. These figures come from full board enumeration, not a simulation.
| Street | KJ still ahead | 54s flipped the lead |
|---|---|---|
| Flop | 68% | 32% |
| Turn | 66% | 34% |
Two unpaired hands with all four ranks live: KJ vs 54s. KJ wins 59.4%, 54s wins 39.9%, and 0.7% of boards chop. The favorite isn't running away with it — 39.9% of the time 54s pairs up first or backs into the better runout — but higher cards making higher pairs is enough to keep KJ in front.
Translate that into a decision and it's simple pot-odds math: counting split pots as half, KJ carries 59.8% equity and 54s 40.2%. Against a pot-sized shove you need about 33% to call and about 25% versus a half-pot bet — so 54s is comfortably priced in to get it all-in here.
How you play KJ vs 54s depends on which side you hold. With KJ you're not crushing, so keep the pot controllable and take the 59.4% edge to showdown when you can; with 54s, your equity is enough to continue with initiative but thin enough that bloating the pot out of position is a trap.
KJ vs 54s FAQ
Who wins KJ vs 54s preflop?
KJ (King-Jack) is the favorite, winning 59.4% of all runouts, while 54s (Five-Four Suited) wins 39.9%. The remaining 0.7% are split pots. Counting splits as half, KJ's preflop equity is 59.8%.
How often does 54s beat KJ?
54s wins 39.9% of the time all-in preflop against KJ — a genuine underdog, but with enough live outs (about 1 in 3) that the matchup is closer than the favorite would like.
Is KJ vs 54s a good spot to get all-in?
For KJ, yes — a 59.8% favorite should happily commit, especially with fold equity. For 54s at 40.2%, it depends on the price: enough to continue with initiative, but thin enough that stacking off out of position is usually a leak.
Does KJ hold up against 54s after the flop?
KJ is still ahead on 68% of flops and stays ahead through the turn on 66% of boards; 54s takes the lead on the other 32% of flops. These are exact figures from full board enumeration.
Run any matchup in the free equity calculator · AK VS QJ · AK VS QT · AQ VS KJ · AQ VS KT · AQ VS JT · AJ VS KQ