Standard NL cash game 100bb deep..

Pre flop- button 3x raise- bb calls pot size 6.5bb
flop- 2/3 pot (4.3bb) c bet... pot is about 10.7bb

How big should raise of c bet be?
How big should re-raise be?

I'm looking for a base-line that I can adjust depending on situations.

Depends on board: if dry, your range is polarized so make it smaller. If wet your range is wider + need to protect/extract value from draws more so bigger.

IP smaller, OOP bigger.

Deeper effective stacks, then bigger, shallower then smaller?

12-20bbs look okay for raise. For reraise sizing, min4bet if he min 3bets on dry board, or shove in every other circumstance almost.

Please help me understand what you are saying.

You would raise a c bet, 120% to 200% of the pot???
You would re-raise (3 bet), how much? If some else raised your c bet?
And if you were in position to 4 bet you would make it min or shove?

A very good gauge is if the bettor makes a standard sized bet (1/2 to pot size) to make your raise 3x the size of his bet. OOP you can make it 3.5x his bet. In position on a dry board you can make it 2.5x his bet.

So in your example, raising the c-bet of 4.3, 13 BBs would be normal. This would in essence be slightly less than pot sized raise. The range would be from 11 BBs to 15 BBs. I adjust my range of 3 bet based on board texture, position, my opponents range, what my opponent perceives as my range, and so on.

Also if there is an intervening caller, I add the amount of the call to the bet size. So if there is a caller here my range would be 15 - 19 BBs.

4 betting is much different here. A formula doesn't work as simple. If you are starting with 100 BBs stacks, 4 betting to 30ish or more is pot committing, so there are times you my want to shove it in, but other times you want to get paid and only raise to 30ish BBs in hopes to getting called and pot committing your opponent for the turn, or to give the impression of fold equity if they shove. Or maybe your are leveling your opponent and shoving the monster and small 4 betting the weaker part of your range.

Of course, early MTTs where you may have 200BB+ stacks, I would stick to about 3x the last bet. Betting about 33 BBs with about 166 left behind is not pot committed, so a shove this deep is not good.

Most people raise 3x the current bet. So in this case, raising to 13BB's would be "standard". The idea is that you are giving your opponent just bad enough odds that he should fold, but most people call anyway. Technically you would raise 90BB's if you could, but he would likely fold to that. You wouldnt want to raise 1BB because he would probably call more anyway, so you're missing value. 3-4BB's is typically the sweet spot. But feel free to play around with it and see reactions. I've made it $100 after someone lead into me for $15 and got a call before, so raise whatever nets you the most profit, unless you're bluffing.