How Much Paint for a 10x10 Room
A 10×10 room with 8-foot ceilings, one door, and one window has about 284 sq ft of paintable wall. At 350 sq ft per gallon that's ~0.8 gallon per coat and ~1.6 gallons for two coats. Buy 2 gallons to cover the 10% waste allowance. Use the calculator to adjust dimensions and coats.
Assumes 8-ft ceilings, 1 door, 1 window, 2 coats — adjust to match your room.
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