How much paint for a 20x15 living room?

A 20x15 living room with 8ft ceilings and typical windows/doors needs about 3-4 gallons for 2 coats. Calculator pre-filled below.

Room length (ft)

Room width (ft)

Ceiling height (ft)

Number of doors

Number of windows

Coats of paint

Material Totals

Net wall area 488 sq ft

Paint needed (gallons) 3 gal

Coverage assumption 350 sq ft/gal

Door area 21 sq ft each, window area 15 sq ft each. Check your paint can for exact coverage rate.

Room size 20x15ft, 8ft ceiling

Interior paint 3 gallons

Primer (if needed) 2 gallons

Generated by BuildTotals.com | buildtotals.com/tools/paint-calculator

Living rooms often have accent walls or different trim colors. Plan the paint quantities for each color separately if you are using more than one.