How much paint do you need for 100 square feet?

Painting 100 square feet of wall takes 2 quarts for one coat or 1 gallon for two coats, at a typical 350 sq ft per gallon.

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sq ft
sq ft

Check the can; 350–400 is typical.

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Your results

Wall paint to buy1 gallon
Paintable wall area100 sq ft
Exact wall paint (2 coats)0.57 gal
Primer, if needed (1 coat)2 quarts
How much paint do you need for 100 square feet — diagram

Paint for 100 sq ft by coverage

Use 400 for smooth, previously painted walls and 250 for texture, bare drywall or masonry.

Coverage1 coat2 coats
400 sq ft/gal1 quart2 quarts
350 sq ft/gal2 quarts1 gallon
300 sq ft/gal2 quarts1 gallon
250 sq ft/gal2 quarts1 gallon

Single gallons and quarts are the right size for this job. Measure wall area as wall width × height, minus doors (about 21 sq ft) and windows (about 15 sq ft).

The math

100 sq ft × 2 coats ÷ 350 = 0.57 gallons

Common questions

How many gallons of paint for 100 square feet?

2 quarts for one coat, 1 gallon for two coats at 350 sq ft per gallon.

Want the full method, tips and other sizes? See the paint calculator guide.

Last reviewed November 1, 2026. Results are estimates — confirm with your supplier.

Similar sizes

200 sq ft300 sq ft400 sq ft500 sq ft

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