Pot question.

Is there an equation to know the right size pot for the height of a plant? Like height of the plant vs the diameter of the pot.

Also, would it be a problem to transplant more than once? Like once just before flowering, and once more about a week into flowering.

1gal / 1ft would be OK

You can transplant all you want, but your plants wont grow for a while afterwords. I wouldn't recommend doing any more transplants than you have to.

Oh yes, i transplanted 3 times total cuz they out grew their pots..you can do it..

There is a chart for container size/plant age. Its in JC's Medical Grow Bible. An amazing publication might I add. I don't have a copy with me right now, but I'm sure you could find someone who does. If nobody has posted it by tomorrow I'll have it for you. And I'd keep transplanting to a minimum. I start in 1 gal containers and transplant the females just once into their final home after sexing. Hope this helps

if you find an actual equation id be intrested to see it also

i would just leave it in what its in now unless its completely neccesary cuz you dont want it to effects the flowering good luck man

Here is the chart as taken from page 234 of the growers bible.
Plant age container size
0-3 wk root cube
2-6 wk 4 inch pot
6-8 wk 2 gal
2-3 months 3 gal
3-6 months 5 gal
6+ months 10 gal