Choose the right painting calculator
Use the general estimator for a compact workflow, or choose a focused calculator for interior walls and ceilings, exterior wall sections, or primer. Coverage and coat assumptions remain visible and editable.
What are you painting?
General paint planning
Use a compact general estimate or measure plain surface area first.
Interior and exterior walls
Choose the workflow that matches room walls or outside wall sections.
Primer
Plan primer separately with its own coat count and product coverage.
How to choose
Use the Paint Calculator for a general wall estimate with simple opening deductions. The Interior Paint Calculator adds editable opening areas and optional combined ceiling area for walls across rooms. The Exterior Paint Calculator focuses on outside wall sections and reports gross area, deductions, and coated area.
Use the Primer Calculator when primer needs its own measured surfaces, coat count, and coverage rate. The Square Footage Calculator remains useful when only objective rectangular area is needed.