Linear Feet Calculator
Choose either piece count times piece length or covered area divided by installed material width. The extra-material percentage is applied after the base linear length is calculated.
How to use the Linear Feet Calculator
Enter a calculation method, either piece count and feet per piece or area and installed width, plus extra-material percentage.
Review usable product width, overlaps, joints, trim pattern, stock lengths, kerf, and whether waste should be applied before package rounding.
Read net linear feet and order length including extra material.
Formula
Piece method: linear feet = piece count × length per piece. Area method: linear feet = area in ft² ÷ installed width in feet. Order length = base length × (1 + extra-material rate).
Example
Covering 240 ft² with boards having a 6 in effective width requires 240 ÷ 0.5 = 480 linear ft before waste.
Assumptions and limitations
- Area conversion assumes constant effective width and complete coverage without gaps; layout-specific cuts and stock optimization are not modeled.
- Linear Feet Calculator treats the entered values as estimates and does not infer missing project, account, or personal details.
- Calculations retain working precision except where the cited method requires an intermediate rounding step; displayed values are then formatted separately. Source rules and dated rates must be rechecked when they change.
Sources
- National Institute of Standards and Technology: SI Units — LengthLength, area, volume, and unit-conversion conventions. Reviewed 2026-08-14.
- National Institute of Standards and Technology: Circumference, Area and VolumeOfficial formula, rate, or program guidance used by this calculator. Reviewed 2026-08-14.
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Frequently asked questions
How does the Linear Feet Calculator work?
Piece method: linear feet = piece count × length per piece. Area method: linear feet = area in ft² ÷ installed width in feet. Order length = base length × (1 + extra-material rate).
What information should I enter in the Linear Feet Calculator?
Enter a calculation method, either piece count and feet per piece or area and installed width, plus extra-material percentage, then verify usable product width, overlaps, joints, trim pattern, stock lengths, kerf, and whether waste should be applied before package rounding.
What should I verify before using this Linear Feet Calculator result?
Area conversion assumes constant effective width and complete coverage without gaps; layout-specific cuts and stock optimization are not modeled.
Reviewed 2026-08-14 · 1.0.0 · content-2026-08-14 · Trusty Calculator Editorial Team