[Pathfinder] Determining a CR to XP formula.

[Arcane_Secrets]

Is there anyone on the boards knowledgeable enough in Pathfinder to have a formula that works beyond CR 25 for translating CR into XP values? I already know how to use the Pathfinder PRD and know about the table for everything up to CR 25, so referring me back to the table doesn't really help me.

Thanks in advance.

[Crow]

Well...here's my 3.5 stuff that I had saved away for some reason:


An even matched CR (= character's level) is 300 times the number, thus a monster with a CR of 8 produces 2400 xp. Second, level +1 gives 150% xp. So in our example 2400+1200=3600xp. Third, every time you add 2 to the CR you double the number. CR+2 gives 2400xp*2=4800xp, or CR+3 is 3600xp*2=7200xp.

Going down, CR-1 is 75% xp. 2400 becomes 1600. Again, you divide by two every time the number goes down by 2. CR-2 is 1200, and CR-3 is 800.

Let's see how to get to the number above. First, the base reward for level 23 is 23*300, or 6900. The target number is CR+3, so first we multiply by 1.5 to get 10350, then double it to get 20700. Two creatures would provide two rewards, so that makes it 41400.

Of course, I am not sure how Pathfinder XP works...so maybe this isn't useful.

[Reinboom]

The table is following a pattern.
The difference between levels 1, 2, and 3 is 200 XP.
The difference between levels 3, 4, and 5 is 400 XP.
The difference between levels 5, 6, and 7 is 800 XP.
...
The difference between levels 23, 24, and 25 is 409600 XP.
The difference between levels 25, 26, and 27 is 819200 XP.
The difference between levels 27, 28, and 29 is 1638400 XP.
The difference between levels 29, 30, and 31 is 3276800 XP.

So
25: 1,638,400*
26: 2,457,600
27: 3,276,800*
28: 4,915,200
29: 6,553,600*
30: 9,830,400
31: 13,107,200*
etc.
*You will also notice that the 'difference' appears in the actual XP table

The other tables follow a similar pattern. In fact, the individual XP for the 4-5 party group is the same exact table except that it is 5 levels lower. So, level 31 for individual XP would be as the full XP (31-5) level 26, which as you would see, is 2,457,600.

The other two are ~35% higher than this and ~35% lower than this. They also follow a similar pattern.

[Arcane_Secrets]

It doesn't seem to work the same in that I don't think Pathfinder keeps track of differences between CR between PC's and monsters. The formula you gave me didn't quite work, but it did put me on the right track to one that does. I figured out that for odd levels, the XP is the previous level * (4/3), and for even levels, XP is previous level * (3/2). Thanks anyways.