In creating your character you had the chance to choose your height and weight.
Your height and weight was chosen from the perspective of others of your race.
A tall elf would still be shorter than the average human, and a tall halfling
would be shorter than a short elf. Your height and weight does not change at
all over time.
FK Average Height and Weight Chart (Males/Females)
Race Height in inches Weight in pounds
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Dwarf 43/41 130/105
Elf 55/50 90/70
Drow 55/50 90/70
Gnome 38/36 72/68
Half-elf 60/58 110/85
Halfling 32/30 52/48
Human 60/59 140/100
Orc 60/59 140/100
* Male/Female : Males are assumed to be heavier than females.