Baseboard Calculator

Step 1: Measure Room Perimeter

Use a tape measure to measure each wall length. For rectangular rooms, measure length and width and calculate: Perimeter = 2 × (Length + Width).

Step 2: Measure Doorways

Measure the width of each doorway. Standard interior doors are 30-36 inches wide. Baseboard does not extend through doorways, so subtract door widths from total perimeter.

Step 3: Account for Corners

Note inside and outside corners. Each corner requires a miter cut, which creates waste. Count all corners in your room.

Step 4: Add Waste Factor

Add 10-15% extra for miter cuts, mistakes, and future repairs. This accounts for material lost during cutting and fitting.

Basic Formula

Example Calculation

What is the standard baseboard height?

Standard baseboard height ranges from 3 to 7 inches. Modern homes typically use 5-6 inch baseboards, while traditional or Victorian-style homes may use taller baseboards up to 8-12 inches. The height should be proportional to ceiling height and room size.

Do I need to remove old baseboard before installing new?

Yes, you should remove old baseboard before installing new ones. This ensures a flush fit against the wall and floor. Use a pry bar and putty knife to carefully remove old baseboard, and repair any wall damage before installation.

Should I install baseboard before or after flooring?

Install baseboard after flooring is complete. This allows the baseboard to sit on top of the flooring and cover the expansion gap. For carpet, baseboard is installed before carpet installation.

What is better: coped or mitered inside corners?

Coped joints are superior for inside corners as they maintain a tight fit even if walls are not perfectly square or wood shrinks over time. Mitered corners are simpler but may develop gaps. For outside corners, always use miter cuts.

How do I calculate baseboard for irregular rooms?

For irregular rooms, measure each wall segment individually and add them together. Subtract door widths. For L-shaped or complex rooms, break the space into rectangular sections and calculate each separately.

What material is best for baseboard?

MDF is popular for painted baseboard due to low cost and smooth finish. Solid wood (pine, oak, maple) is preferred for stained baseboard. PVC and polyurethane are moisture-resistant options for bathrooms and basements.

How much does baseboard installation cost?

Material costs range from $0.60-$5 per linear foot depending on material and style. Professional installation adds $2-$6 per linear foot. Total project cost for a typical room ranges from $200-$800.

Do I need quarter round with baseboard?

Quarter round (shoe molding) is optional and covers gaps between baseboard and flooring. It's commonly used with laminate and hardwood floors that need expansion gaps. Not needed with carpet or if baseboard sits flush to floor.