Primer Coverage Calculator Pro (USA)
Accurate estimates for US Gallons & Square Feet
Enter dimensions to see results
How to Estimate Primer Like a Pro
Calculating the right amount of primer is crucial for a professional finish. Unlike paint, primer has different absorption rates depending on the surface texture.
Standard Coverage Rates in the USA
- Smooth Surfaces (Drywall/Plaster): Typically covers 300-400 sq ft per gallon. Use this for new, unpainted drywall.
- Rough or Porous Surfaces: Coverage drops to 200-250 sq ft per gallon. This applies to textured walls, raw wood, or masonry.
Why Use This Calculator?
This tool is specifically calibrated for US measurements (Square Feet and US Gallons). Whether you are painting a room in New York or a exterior wall in California, accurate estimation saves money and multiple trips to the hardware store. We apply a standard 10% waste factor, which is the industry best practice.
