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Paint Calculator

Use this calculator to estimate the number of gallons of paint needed to paint room walls and ceilings.

Room Dimensions
Length: ft. in.
Width: ft. in.
Ceiling Height: ft. in.

Paint Coverage
Coverage: sq.ft. per gal.

Square Footage Results
Wall Area: sq. ft.
Ceiling/Floor Area: sq. ft.
Total Area: sq. ft.

Estimated Paint Amounts
Walls: gal.
Ceiling/Floor: gal.

note: subtract 21 square feet for each standard door.

Painting Tips

The order in which you paint a room should be top to bottom. Areas should be painted in the following order:

  1. Ceiling
  2. Walls
  3. Windows and Doors
  4. Trim