How much you should raise to really depends on a lot of things, especially on post flop streets, where stack sizes should influence your sizing, along with board texture, number of opponents, their style, their ranges, your position, etc. All this should help you decide the odds you want to offer to your opponent(s), which in turn dictate your raise size.Is there an article on here about 3bet sizing?
Mathematically, a pot sized raise (or bet) is defined as a raise (or bet) that offers 33.33% pot odds to your opponent (2:1 odds). In other words, opp would have to call X for a chance to win 2X.
Let's do the math. Let's say P is the total pot size after your opponent has bet B. You need to raise to R so that your opponent has to call (R-B) and get 33.33% pot odds:
(R-B)/(P+R+R-B)=0.3333
(the denominator is the total size of the pot after opp has called)
R-B=0.3333*(P+2R-B)
3R-3B=P+2R-B
R=P+2B
So your raise has to be the size of the pot after your opponent has bet + 2x what it would cost you to call his bet.
The good thing is that it works in all cases:
- if your opponent checks or if you are OOP (B=0), then you simply have to bet P, the size of the pot, to offer 33.33% pot odds.
- if there are multiple opponents, say opp1 bets B1, opp2 raises to B2, the rule still holds: pot is P when it is your turn to play, and if you raise to P+2*B2, you are offering opp2 33.33% pot odds (and >33.33% to opp1)
This is what happens when you hit the "pot" button on the bet slider of your poker room.
Similarly, you lay the following pot odds with these bet/raise sizes:
3/4 pot: 30%
2/3 pot: 28.6%
1/2 pot: 25%
1/3 pot: 20%
1/4 pot: 16.7%
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