Free Online Calculators

Professional Paint Calculator

Calculate professional paint calculator for construction and building projects.

Professional Estimation

Professional painters don't just guess. They calculate square footage, subtract windows/doors, and account for surface texture to ensure they order the exact right amount of paint.

The Spread Rate

Standard: 350-400 sq ft per gallon.
Textured: 250-300 sq ft per gallon.
Porous (New Drywall): 200-250 sq ft per gallon (Primer).

Pro Tips

Color Changes

Going from dark to light?

  • Primer: Use a high-hiding primer. It's cheaper than doing 3-4 coats of expensive topcoat.
  • Tinted Primer: Tint your primer to gray if painting a deep red or blue.

Trim & Doors

Don't forget the details.

  • Doors: Count 20 sq ft per side for a standard door.
  • Trim: Calculate linear feet × width. Usually 1 gallon of trim paint covers an entire average house.

Frequently Asked Questions

How to use the Professional Paint Calculator

Follow these steps to get accurate results with the professional paint calculator.

  1. 1

    Enter your values

    Fill in the required input fields above. Units can be changed where available.

  2. 2

    Click Calculate

    Press the calculate button to compute results instantly in your browser.

  3. 3

    Review your results

    View the computed outputs and use related calculators for deeper analysis.

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