Baseboard Calculator

Linear footage from room perimeter minus door openings.

Inputs

Room length (ft)

Room width (ft)

Number of doors

Door width (ft)

Cost per linear ft ($)

Waste factor (%)

%

Board length (ft)

Tab to move between fields

Results

Net linear feet

41

Linear ft (with waste)45.1

Boards to buy6

Total cuts6

Material cost$72.00

How to Use This Calculator

Enter Room length (ft), Room width (ft), and Number of doors.
Set Door width (ft), Cost per linear ft ($), and Waste factor (%).
Adjust Board length (ft) as needed.
Review the Net linear feet result.
Use Linear ft (with waste) and Boards to buy to inform your decision.

How the result changes with Room length (ft)

Room length (ft)	Net linear feet
21	59
71	159
130	277
180	377

What each input means

Room length (ft): Length of the room in feet.
Room width (ft): Width of the room in feet.
Number of doors: Number of doorways (baseboard is not installed across openings).
Door width (ft): Average width of each doorway in feet.
Cost per linear ft ($): Price per linear foot of baseboard material.
Waste factor (%): Extra material for cuts and waste (10% is typical).
Board length (ft): Standard length of each baseboard piece you will purchase.

What each result means

Net linear feet: Baseboard needed after subtracting door openings.
Linear ft (with waste): Total footage including waste factor.
Boards to buy: Number of full-length boards to purchase.
Total cuts: Inside corner miters plus butt joints at door casings.
Material cost: Estimated cost for baseboard material.

How this is calculated

Worked example, using the default values

Identify Input Parameters
4 parameters
Room length (ft) = 12, Room width (ft) = 10, Number of doors = 1, Door width (ft) = 3 = 7 input(s) provided
Calculate Net linear feet
Net linear feet
41 = 41
Calculate Linear ft
Linear ft = netLinearFt * (1 + wastePct / 100)
45.1 = 45.1
Calculate Boards to buy
Boards to buy
6 = 6

Engine last updated August 5, 2026. Checked against 2 independently-derived tests — how we verify calculators.

The questions that sit next to this one — chosen by subject, including calculators filed under a different category.

Finish Carpentry

Door Casing Calculator

Casing set count and material from door count.

Finish Carpentry

Trim Stain Paint Calculator

Finish quantity from total linear feet of trim.

Finish Carpentry

Crown Molding Calculator

Linear feet and miter angles for rooms with corners.

Canoe Trim Calculator

Calculate optimal canoe trim (fore/aft weight balance) from paddler weights, gear placement, and capacity for best tracking and handling.

More in Construction & Building Trades.