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Chapter 8: Tactical Rules / Movement and Position

Size and Space

Source Starfinder Core Rulebook pg. 255
Creatures come in different sizes and can occupy multiple squares. The square or squares a creature occupies are also referred to as the creature’s space. Occasionally objects are defined with these same size categories.

There are nine size categories, and each determines the specific amount of space a creature takes up. The size categories are Fine, Diminutive, Tiny, Small, Medium, Large, Huge, Gargantuan, and Colossal.

Fine, Diminutive, And Tiny

These creatures take up less than 1 square of space. This means that more than one such creature can fit into a single square. A Tiny creature typically occupies a space only 2-1/2 feet across, so four can fit into a single square. Up to 25 Diminutive creatures or 100 Fine creatures can fit into a single square.

Small And Medium

Most player characters are Small or Medium, and creatures of these size categories take up a single 5-foot square of space.

Large, Huge, Gargantuan, And Colossal

Creatures in these size categories take up more than 1 square of space. See Table 8–1: Creature Size on page 256 for more details.

Table 8-1: Creature Size

Size Category	Height or Length¹	Weight²	Space	Natural Reach (Tall³)	Natural Reach (Long³)
Fine	6 in. or less	1/8 lb. or less	1/2 ft.	0 ft.	0 ft.
Diminutive	6 in.–1 ft.	1/8–1 lb.	1 ft.	0 ft.	0 ft.
Tiny	1–2 ft.	1–8 lbs.	2-1/2 ft.	0 ft.	0 ft.
Small	2–4 ft.	8–60 lbs.	5 ft.	5 ft.	5 ft.
Medium	4–8 ft.	60–500 lbs.	5 ft.	5 ft.	5 ft.
Large	8–16 ft.	500 lbs.–2 tons	10 ft.	10 ft.	5 ft.
Huge	16–32 ft.	2–16 tons	15 ft.	15 ft.	10 ft.
Gargantuan	32–64 ft.	16–125 tons	20 ft.	20 ft.	15 ft.
Colossal	64 ft. or more	125 tons or more	30 ft.³	30 ft.	20 ft.