imposeren's page

Correct url

Generally you can guess the conversion by comparing ranges of bonuses gained at different levels in both editions. This works for anything, not just skills.

Skill DCs:
* PF1 bonuses: +0..+23
* PF2 bonuses: +0..+28
* DC conversion: DC₂ₑ = 10 + (DC₁ₑ − 10)×28/23 ~= 10 + (DC₁ₑ − 10)×1.22

Save DCs (purely from bonuses, so this is against effects that are not based on opponents level, e.g. environment effects, hazards, etc):
* PF1 bonuses: +0..+12
* PF2 bonuses: +0..+28
* DC conversion: DC₂ₑ = 10 + (DC₁ₑ − 10)×28/12 ~= 10 + (DC₁ₑ − 10)×2.33

Save DCs (based on DC formulas in both versions, so this are DCs against effects based on opponent level, e.g. creature ability DCs):
* PF1 bonuses: +0..+10 (half the level)
* PF2 bonuses: +3..+28 (full level and trained-legendary proficiencies)
* DC conversion: DC₂ₑ = 10 + 3 + (DC₁ₑ − 10)×(28−3)/10 = 13 + (DC₁ₑ − 10)×2.5

Last formula can also be used to convert AC values of monsters:
AC₂ₑ = 13 + (AC₁ₑ − 10)×2.5

And can be adapted to convert Save bonuses of monsters:
* If PF1 value is 4 or greater: SaveBonus₂ₑ= 2 + (SaveBonus₁ₑ − 2.5)×2.5 [mathematical rounding]
* If PF1 value is 1–3: SaveBonus₂ₑ=SaveBonus₁ₑ

P.S. This all works correctly for DCs/ACs that are greater than or equal to 10

"Climb" has some reference to footholds and handholds in both editions: PF1 reference, PF2 reference

So:
* PF2 Legendary DC is PF1 DC=30
* PF2 Master DC is PF1 DC=25
* PF2 Expert DC is PF1 DC=15 or DC=20
* Others are not so clear

But "honest direct conversion" is impossible. You can do something like this:
* "Untrained DCs" (0-10, maybe 0-12): PF2 = PF1, or maybe PF2 = PF1 - 2
* "Trained DCs" (11-15 or 13-16): PF2=PF1, maybe PF2=PF1-1
* "Expert DCs" (16-20 or 17-21): PF2=PF1+2, maybe PF2=PF1+1
* "master DCs" (21-25 or 22-26): PF2=PF1+4, maybe PF2=PF1+3
* "legendary DCs" (26-30 or 27-31): PF2=PF1+6, maybe PF2=PF1+5
* "epic DCs": no way to guess correct conversion, maybe just keep them as is.

But this way you will never get some DC values when converting PF1→PF2 (like 16-17, 21-22, 26-27 for first versions of DC ranges)

Why not include TEML values as a faint numbers right in each entry? Like this:
https://imgur.com/a/m1tnb2L