I do not like to give my NPC’s levels, so I base their stats / experience off their age. To be fair I made this formula.
Y= (((B-C)/(D-1))*(X-1))+C
Y= Age
B= Max Age
C= Adulthood Age
D= Max Level
X= Level
So a level 5 Hill Dwarf is around 84 years old and a level 5 High Elf is around 160 if...