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Wall Paint Calculator Square Feet | Free Paint Coverage Calculator

Calculate exact wall paint square footage instantly. Enter room dimensions below for precise paint requirements in square feet. Includes adjustments for doors, windows, and multiple coats. Perfect for 12×12 rooms and standard wall sizes.

Select your preferred unit system:

Select Room Shape

Rectangular Room

L-Shaped Room

Room with Bay

Room with Alcove

Room Dimensions

Imperial (ft)
Width (ft)Length (ft)

A simple rectangular room with four walls

Room Dimensions

ft
ft
ft

Measurement Tips

Measure each dimension at multiple points and use the largest measurement for accurate results.

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Total Area

0sq ft

Paint Required

0gallons

For 2 coats of standard paint

Primer Required

0gallons

For one coat of primer

Estimated Time

0 hours

Approximate time to complete

Pro Tips

Extra Coverage

Add 10% extra paint for touch-ups

Drying Time

Allow paint to dry between coats

Quality Check

Inspect surfaces between coats

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