Trim Paint Calculator

Calculate paint needed for baseboards, crown molding, and door/window trim.

Baseboard (linear ft)

Crown Molding (linear ft)

Door Trim (linear ft)

Window Trim (linear ft)

How It Works

Enter the linear feet of each trim type. The calculator estimates the paintable area using standard widths and calculates gallons needed.

Formula

Trim Area = Total linear feet × avg width (0.5 ft) | Gallons = Area / 350

Frequently Asked Questions

How much trim paint do I need?

Estimate total linear feet of trim, multiply by the trim width (typically 4–6 inches), and divide by 350 sq ft per gallon.

How wide is standard baseboard?

Standard baseboard is 3–5 inches wide. Crown molding is typically 3–4 inches wide.