Estimate the amount of paint gallons needed based on wall dimensions and number of coats.
Estimated Material:
Total Square Footage:0 sq ft
Paint Required:0 Gallon(s)
How to Calculate Wall Paint
Multiply the total length of all walls by the ceiling height to get the gross surface square footage. A standard single gallon of premium interior paint typically covers around 350 to 400 square feet of flat wall surface area.
Important DIY Painting Tips
Deduct Openings: For optimal precision, subtract 21 sq ft for each standard door frame and 15 sq ft for each medium window frame from your total calculation.
Primer Requirements: Raw drywall or heavily repaired surfaces absorb paint rapidly. Always apply a dedicated primer coat first to prevent wasting expensive topcoats.