I’m trying to create a backend for a Poker odds calculator. I know how to go about calculating odds post-flop, but I’m having a hard time calculating the odds pre-flop. How do I go about calculating pre-flop odds with all the hands involved revealed? More on poker.stackexchange.com

Specify how many players must be at the poker table to calculate the odds. ... Fill in each player’s poker hands, including your own. ... For games like Texas Hold, add Flop, Turn, and River cards. More on pokerlistings.com

Had some downtime at work, and have been working on this quick reference for pre-flop hold'em odds, with different tables and odds for 2-9 players. The percentage refers to the odds that you'll end up with the best hand after all is said and done. Obviously you'll have to tailor your play based on how others play the hand, the cards on the table, etc. but I find that it's really helpful to show you what is a viable hand to play at different stages of a tourney. Green shaded cells show you when (in my opinion) it's a good idea to play a hand. I include more hands based on the number of players at the table. So for instance, if there are 4 players at the table, the top 25% of hands are in green. Also interesting to note that suited cards in your hand matter less and less with fewer players at the table. I thought this was interesting and hadn't heard this before. Notice how the bottom 50% of hands is mostly in the "offsuit" table when you're playing with 9 players, but the bottom 50% of hands is pretty much evenly split between offsuit and suited when playing with only two players. Hope this helps you! More on reddit.com

Those charts don't look to be particularly useful for hold 'em, because your opponents will almost certainly not put money in the pot with any random two cards. Raw equity only matters if you can get to showdown with a hand. So hands like Q5o are total garbage because their playability is horrible, even though they have some raw equity

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