Baseboard Calculator
Count baseboard lengths for a room, with a waste allowance.
Quick answer: enter your details below and click Count Baseboards — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
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Enter your details below.
How to use
- Measure the perimeter and subtract door openings.
- Enter the length of one baseboard.
- Click Count Baseboards.
About this tool
Enter the perimeter minus door openings and the length of one baseboard, and the tool adds a 10 percent allowance for cuts and corners before rounding up. The allowance is shown separately from the exact count.
Frequently asked questions
What about built-in cupboards?
Subtract runs hidden behind fixed units if the boards will never be seen or fitted there.
Should lengths match wall lengths?
It helps waste, since a board that spans a wall needs no join.