Paint for a 20 × 20 room

3.4 gal

Walls of a 20 × 20 room, 8 ft high, 2 coats, 350 ft²/gal

Paint by wall height

Height	Wall ft² (1 door, 2 windows)	1 coat (gal)	2 coats	2 coats + ceiling
8 ft walls	590	1.7	3.4	5.7
9 ft walls	670	1.9	3.8	6.1
10 ft walls	750	2.1	4.3	6.6

Your exact room

Room length (ft)

Room width (ft)

Wall height (ft)

Doors

Windows

Coats

Paint the ceiling too?

Coverage per gallon (ft²)

Price per gallon ($)

FAQ

How much paint for a 20x20 room?

With 8 ft walls, one door and two windows the walls are about 590 ft². Two coats need about 3.4 gallons - buy 4. Including the ceiling: about 5.7 gallons.

Other room sizes

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