DFRPG running D&D 5e starting adventures

[beaushinkle]

Originally Posted by restlessgriffin

I have no idea what 9th level would be for DFRPG.

One of the main conversions I've seen is dripton's castle whiterock conversion, which has a conversion guide for both gold and DCs for dnd3.5e

1 gp of treasure in the adventure equates to $1. You can either just say that
in your game $1 = 1 gp if you want the piles-o'-gold-everywhere D&D feel, or
convert the gold coins to silver or copper if you prefer to keep the DFRPG money
rules. (I started off with 1 gp -> $4, and that was way too much treasure.)

...

DC skill modifier
10 +2
15 0
20 -2
25 -4
30 -6
35 -8
40 -10

Branching off that, we can use other conversion guides to go from other versions to 3.5, and then to gurps. I found this one, which lists this formula:

There is a formula for converting DCs from 3.5 to 5 that I like a lot, and it seems to be very accurate. It is: (3.5 DC - 10)/2 +10 = 5 DC (Round up). So if the 3.5 DC is 23, then you get 23 - 10 = 13/2 = 6.5 + 10 = 16.5 = 5th DC is 17.

So if you're converting the other way, the 3.5 DC would be the 5e DC * 2 - 10

Meanwhile, the same dripton whiterock conversion suggests that level 1 dnd characters are roughly ~125 point DFRPG delvers, and every dnd level is ~25 character points. This implies that a 9th level dnd character is about ~325 gurps points. 250 point DFRPG characters are like 6th level dnd characters.

So applying all of this, the lost mines of phandelver has the heroes make an early DC 12 perception check to spot a trap, and then if they triggered it, a DC 10 dex check to not get snared.

Converting that, a 5e DC 12 would be a 3.5 DC of 14, which is an unmodified Per check in gurps to see the trap. Avoiding it is a 5e DC 10, which is a 3.5 DC of 10, which is a DX+2 check in gurps.

Seems to all look good to me!