KTo vs JTo: preflop equity

Dealt all in against each other, KTo takes 72.03% of the pot on average and JTo takes the other 27.97%.

KTo

72.03%

Wins 70.64%, ties 2.79%

JTo

27.97%

Wins 26.57%, ties 2.79%

Equity counts a tie as half a win. Exact over every board.

KTo against JTo: the numbers

Exact preflop results for KTo against JTo, in percent
HandWinsTiesLosesEquity
KTo70.6372.79326.57072.033
JTo26.5702.79370.63727.967

KTo and JTo are both offsuit hands. Because the hands share one rank, the one with the higher kicker is ahead when that rank pairs and the other hand is mostly drawing.

KTo is the clear favorite, though JTo gets there on roughly one board in 4. Ties are part of the picture: 2.79% of boards end in a split pot, and each side counts that as half a win.

Place 33 of 169 belongs to KTo and place 57 belongs to JTo in the ranking against a random hand.

Boards behind the percentages: 184,928,832 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
KTo130,628,0005,165,00049,136,000
JTo49,136,0005,165,000130,628,000

The total is exact: 108 specific deals times 1,712,304 boards. The three counts are approximate, worked out from the percentages to five decimals and rounded to the nearest thousand.

KTo against JTo read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
KTo2.5761.4163.7640.388
JTo0.3883.7641.4162.576

In the last column, a pot-to-call ratio at or above the figure makes a call break even or better at this equity.

Who is ahead on which flops

Break the boards down by their first three cards and KTo is strongest on low rainbow flops (nine high or lower) (79.22%) and weakest on monotone flops (66.87%). KTo stays ahead on all five textures.

KTo against JTo by flop texture, in percent
FlopShare of flopsKTo winsTiesJTo winsKTo equity
Rainbow, ten or higher23.27568.1442.70829.14869.498
Rainbow, nine or lower7.77178.4601.51720.02379.218
Two-tone46.47770.1862.34327.47171.357
Monotone5.14465.2783.17331.54966.865
Paired17.33373.2764.57122.15375.562

A rainbow flop shows three suits, a two-tone flop repeats one suit, a monotone flop is a single suit, and a paired flop repeats a rank.

Compared with a random hand

Relative to a random opponent, KTo changes by +12.29 points (baseline 59.74%) and JTo by -27.28 points (baseline 55.25%).

KTo and JTo here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
KTo, all flops72.03359.739+12.2941.20580
KTo, rainbow, ten or higher69.49859.739+9.7591.16336
KTo, rainbow, nine or lower79.21859.739+19.4791.32607
KTo, two-tone71.35759.739+11.6181.19448
KTo, monotone66.86559.739+7.1261.11929
KTo, paired75.56259.739+15.8231.26487
JTo, all flops27.96755.248-27.2810.50621
JTo, rainbow, ten or higher30.50255.248-24.7460.55209
JTo, rainbow, nine or lower20.78255.248-34.4660.37616
JTo, two-tone28.64355.248-26.6050.51844
JTo, monotone33.13555.248-22.1130.59975
JTo, paired24.43855.248-30.8100.44233

Does a shared suit matter?

Split by suits, the deals give KTo 72.13% when the hands overlap in a suit and 71.71% when they do not. KTo does better with a shared suit, by 0.42 points.

KTo against JTo by suit overlap, in percent
DealsSpecific dealsShare of dealsKTo winsTiesJTo winsKTo equity
Share a suit8477.7870.7172.82026.46372.127
No shared suit2422.2270.3572.69626.94771.705

How often this matchup comes up

How often does it happen? 108 of the 1,624,350 ordered deals (0.0066%) are KTo against JTo, and 216 (0.0133%) if either hand may sit in either seat.

A worked example

Try it with money: two players each put in $100 and the whole board runs out every possible way. KTo averages $144.06 from the $200, up $44.06; JTo averages $55.94, down $44.06.

Per 1,000 deals: KTo wins about 706, JTo wins about 266, and about 28 end in a split pot.

The same matchup from the other side

Read it from the other side: JTo against KTo is the same matchup with the numbers swapped, so JTo holds 27.97% and KTo holds 72.03%. That address sends you back to this page.

The calculator link fills in KsTh against JdTc, a deal where the two hands share no suit. Change any card to test your own hand. The neighboring matchups below swap one of the two hands for one of similar strength.

How this was computed

All 1,712,304 five-card boards are dealt for every suit pattern among the 108 specific deals of KTo against JTo, and both hands are scored on each. That is a full count, so the percentages are exact. Ties are half a win each, and each board appears once per flop it contains.

Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used.

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