Baseboard Calculator
Estimate baseboard or trim for a room. Enter the room dimensions and door openings to get the linear feet to buy including waste, the number of stock lengths, and an estimated cost.
Your project
Estimate
Baseboard to buy · Includes waste allowance
- Stock pieces
- 4pieces
- Estimated material cost
- $134.75
Estimates are guidance only and exclude tax, labor, and site conditions unless stated. Confirm with a local pro.
How it's calculated
No black boxes — here is the exact math behind your estimate, so you can check it or adapt it for your own quote.
- 1
Perimeter = 2 × (length + width) - 2
Net length = perimeter − (doors × door width) - 3
Linear feet = net length × (1 + waste% ÷ 100) - 4
Pieces = ⌈ linear feet ÷ stock length ⌉ - 5
Cost = linear feet × price per foot
Worked example
A 12 ft × 14 ft room with one 3 ft doorway, bought in 16 ft lengths.
Inputs
- Room length
- 12 ft
- Room width
- 14 ft
- Door openings
- 1
- Door width
- 3 ft
- Waste allowance
- 10 %
- Stock length
- 16 ft
- Price per foot
- 2.5 $/ft
Result
- Baseboard to buy
- 54 lin ft
- Stock pieces
- 4 pieces
- Estimated material cost
- $134.75
Tools & materials for this project
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- Baseboard molding Primed trim ready to cut and install.
- Brad nailer Fasten baseboard quickly without splitting it.
- Paintable caulk Fill the top gap for a finished, seamless look.
Compare local pros for baseboard
An estimate gets you a budget. A few competing quotes get you the real price. Tell us about the job and we'll help you find vetted contractors nearby.
Baseboard cost by state
The calculator does the quantity math exactly. What it can't know is what a fair unit price looks like where you live — baseboard runs 61% more in the priciest US market than the cheapest.
Baseboard cost in all 50 states + DC US average $4.00 per linear foot installed · regional averages, full ranked table, and typical project totals.