Size Modifiers
Creature Size Size Modifier1,4 (Attacks & AC) Special Size Modifier2 (CMB & CMD) Size Modifier to Fly4 Skill Checks Size Modifier to Stealth4 Skill Checks Space "Natural " Reach3 Typical Height/Length3 Typical Weight3
Fine5 +8 -8 +8 +16 1/2 ft. 0 6" or less 1/8 lb. or less
Diminutive5 +4 -4 +6 +12 1 ft. 0 6" to 1 ft. 1/8 lb. - 1 lb.
Tiny5 +2 -2 +4 +8 2-1/2 ft. 0 1' to 2 ft. 1-8 lbs.
Small +1 -1 +2 +4 5 ft. 5 ft. 2' to 4 ft. 8-60 lbs.
Medium +0 +0 +0 +0 5 ft. 5 ft. 4' to 8 ft. 60-500 lbs.
Large (tall) -1 +1 -2 -4 10 ft. 10 ft. 8' to 16 ft. 500-4000 lbs.
Large (long) -1 +1 -2 -4 10 ft. 5 ft. 8' to 16 ft. 500-4000 lbs.
Huge (tall) -2 +2 -4 -8 15 ft. 15 ft. 16' to 32 ft. 2-16 tons
Huge (long) -2 +2 -4 -8 15 ft. 10 ft. 16' to 32 ft. 2-16 tons
Gargantuan (tall) -4 +4 -6 -12 20 ft. 20 ft. 32' to 64 ft. 16 - 125 tons
Gargantuan (long) -4 +4 -6 -12 20 ft. 15 ft. 32' to 64 ft. 16 - 125 tons
Colossal (tall) -8 +8 -8 -16 30 ft. 30 ft. 64 ft. or more 125 tons or more
Colossal (long) -8 +8 -8 -16 30 ft. 20 ft. 64 ft. or more 125 tons or more
size-comparisons.jpg

Table: Ability Adjustments from Size Changes

Creature's Original Size Str Dex Con Adjusted Size
Fine +6 -6 - Small
Diminutive +6 -4 - Small
Tiny +4 -2 - Small
Large -4 +2 -2 Medium
Huge -8 +4 -4 Medium
Gargantuan -12 +4 -6 Medium
Colossal -16 +4 -8 Medium
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