Baseboard Calculator

Calculate the linear feet of baseboard trim needed for your room. Subtract doorways and openings for accurate measurements.

Enter Your Measurements

Room Length(ft)

Room Width(ft)

Door Openings

Results

Baseboard Needed

linear feet

8-foot Pieces

pieces

Exact Length

linear feet

Room Perimeter

Cost Estimate

Cost per linear foot

per linear foot

Estimated Cost

$105.60

Formula

Linear Feet = (2 × (L + W) - Doors × 3) × 1.10

How to Use This Calculator

How to Use

1
Enter room length and width.
2
Enter number of door openings (3 ft each subtracted).
3
Results include 10% waste for cuts and corners.
4
Baseboard comes in 8, 12, and 16 foot lengths.

Frequently Asked Questions

What size baseboard should I use?

3.5-inch baseboards are standard. Rooms with 9-10 foot ceilings look better with 5-7 inch baseboards. Taller baseboards add a more formal appearance.

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About This Calculator

This calculator uses the formula: Linear Feet = (2 × (L + W) - Doors × 3) × 1.10. All calculations follow industry-standard methods. Results are estimates — always verify with a licensed professional for structural or code-compliant work.

Built and maintained by the CalcSmart team. Last updated March 2026.

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