Home & DIY Calculators
Baseboard & Trim Calculator
Enter room dimensions, doorway width to exclude, and board length to calculate baseboard boards needed.
6 boards
41.0 linear ft needed (45.1 ft with waste allowance) — room perimeter 44.0 ft
Miter cuts at corners use a bit more material than a straight cut — the waste allowance above accounts for that plus mistakes. Add extra if the room has many inside/outside corners.
How to use this tool
- 1Enter room length and width.
- 2Enter total doorway width to exclude.
- 3Enter your trim board's length.
- 4See linear feet and boards needed.
Frequently asked questions
Why exclude doorway width?+
Baseboard doesn't run across door openings, so subtracting doorway widths from the room perimeter gives a more accurate material estimate.