Drywall & Paint Calculators

Drywall panels, joint compound, primer, and room-paint estimators. Every calculator runs locally in your browser and exposes the formula or product-coverage assumptions it uses.

Flagship takeoff

Drywall Material Calculator

Estimate drywall sheets, finishable square footage, joint tape, joint compound, and screws for a rectangular room with optional ceiling coverage.

Drywall Sheets Calculator

Convert wall-and-ceiling square footage into 4×8, 4×10, or 4×12 drywall sheet quantities with waste.

Drywall & Paint Calculators

Drywall Mud & Joint Compound Calculator

Estimate ready-mixed drywall joint compound from gypsum-board square footage and an adjustable square-feet-per-gallon coverage rate.

Flagship takeoff

Room Paint Calculator

Estimate wall-paint gallons from room dimensions, doors, windows, number of coats, and the coverage rating of the paint you plan to use.

Drywall & Paint Calculators

Primer Calculator

Estimate primer gallons from surface square footage, number of coats, and the primer’s rated coverage.

Methodology

These are quantity and pricing estimators, not structural designs. Product-specific coverage values are editable, and code-sensitive structural decisions are intentionally excluded.