BuildProjectCalc
Painting

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.

Paint CalculatorEstimate wall paint after doors, windows, coats, and coverage are considered.Square Footage CalculatorFind the combined area of rooms, walls, or other rectangular spaces.

Interior and exterior walls

Choose the workflow that matches room walls or outside wall sections.

Interior Paint CalculatorEstimate interior wall and optional ceiling paint with editable openings and coverage.Exterior Paint CalculatorEstimate exterior wall paint after openings, coats, and coverage.

Primer

Plan primer separately with its own coat count and product coverage.

Primer CalculatorEstimate primer from multiple surface areas, coats, and editable 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.

Measure with context

Painting planning guides

Browse all guides