HOLD 'EM PREFLOP ODDS
being dealt a pocket pair 5.88% (16 to 1 against)
being dealt two cards of the same suit 23.5% (3.25 to 1)
being dealt at least one ace 15% (5.7 to 1)
in a 10 person game, chance of someone holding an ace and any other card of the same suit 9%
ODDS ON FLOP
holding AK, chance of flopping at least one A or K 32.4%
holding pocket pair, chance of flopping 3 of a kind or better 11.8% (7.5 to 1)
holding 2 suited cards, chance of flopping at least a four-flush 11.8% (7.5 to 1)
holding 2 unmatched cards, chance of flopping split 2-pair 2%
holding 2 unmatched cards, chance of pairing at least one of your cards 32.4% (2.1 to 1)
holding 2 connected cards(4,5-10,J) chance of flopping open ended straight draw 15%
holding 2 unmatched cards, not A or K, any flop with no A or K 58.6%
holding 2 unmatched cards, not A or K, any flop with no A 77.5%
holding 2 unmatched cards, any flop that does not contain either of your cards 67.6%
ODDS AFTER FLOP
after flopping 4 flush, chance of making the flush 35% (1.86 to 1)
after flopping open ended straight flush draw, chance of making  at least a straight 54.1% (0.85 to 1)
after flopping open ended straight flush draw, chance of making straight flush 8.4% (11 to 1)
after flopping 2 pair, chance of making full house or better 16.7% (5 to 1)
with a pair after the flop, chance of getting at least one more of that card 8.4% (11 to 1)
after flopping trips, chance of making  at least a full house 33% (2 to 1)
MISCELLANEOUS HOLD 'EM ODDS
2 suited cards make a flush (assuming you go all the way to the river) 6.5%
In a 10 person game, K high flush is beaten by A high flush (assuming people play Ax suited) less than 6%
connected cards(4,5 through 10,J) make 4 straights, cards with one space between (i.e. 4,6) make 3 straights, cards with 2 spaces between make 2, and with 3 spaces between make 1
HOLD 'EM Outs Chart After Flop (2 cards to come)
Number of Outs Win %
20 67.5
19 65.0
18 62.4
17 59.8
16 57.0
15(st. flush draw) 54.1
14 51.2
13 48.1
12 45.0
11 41.7
10 38.4
9(flush draw) 35.0
8(straight draw) 31.5
7 27.8
6 24.1
5 20.3
4(full house draw) 16.5
3 12.5
2 8.4
1 4.3
HOLD 'EM Outs Chart After Turn (1 cards to come)
Number of Outs Win %
20 43.5
19 41.3
18 39.1
17 37.0
16 34.8
15(st. flush draw) 32.6
14 30.4
13 28.3
12 26.1
11 23.9
10 21.7
9(flush draw) 19.6
8(straight draw) 17.4
7 15.2
6 13
5 10.9
4(full house draw) 8.7
3 6.5
2 4.3
1 2.2
% chance of having an overcard come on turn or river, after flopping top pair of...
A 0
K 17
Q 32
J 45
10 57
9 68
8 77
7 84
6 90
5 95
4 98
3 100
ABSENCE OF ACES CHART
# of players % chance that nobody else has an A, if you do % chance that nobody including you, has an A
2 88.0 85.0
3 77.0 71.0
4 67.5 59.0
5 58.5 48.5
6 50.0 40.0
7 43.0 32.0
8 36.0 25.5
9 30.0 20.0
10 25.0 15.5