Linear Feet Calculator
Calculate total linear feet, perimeter, square feet to linear feet, or linear feet to square feet.
Use this for construction runs such as trim, edging, boards, borders, simple layouts, or material width conversions.
Results
This calculator handles construction measurement math, not freight trailer space or material-specific pricing.
How to use this calculator
- 01Choose total linear length, perimeter, area to linear length, or linear length to area.
- 02Use the unit toggle for feet and inches or metric meter inputs.
- 03Enter quantity, perimeter dimensions, area, or material width for the selected mode.
- 04Read the primary result and the matching metric or imperial conversion.
If you need the starting area first, use the Square Footage Calculator or Square Meter Calculator. For a full fence material takeoff, use the Fence Calculator.
Understanding the math
Linear feet measure total length. Area conversions need material width in the same unit system before dividing or multiplying.
total_linear_length = length x quantity perimeter = 2 x (length + width) linear_length = area / material_width area = linear_length x material_width linear_meters = linear_feet x 0.3048 square_meters = square_feet x 0.09290304
Linear measurement reference table
Use these quick examples to check common linear length and area-to-width conversions.
| Example | Result | Use |
|---|---|---|
| 1 linear ft | 12 in | One foot of length |
| 10 linear ft | 10 ft | Ten feet of run length |
| 100 linear ft | 100 ft | Common trim or edging takeoff |
| 100 sq ft at 6 in wide | 200 linear ft | Area divided by 0.5 ft width |
| 100 sq ft at 12 in wide | 100 linear ft | Area divided by 1 ft width |
Frequently asked questions
How to calculate linear feet?
Linear feet is total length measured in feet. For one run, use the length. For repeated pieces, multiply the piece length by quantity.
How to calculate linear feet from square feet?
Divide square feet by the material width in feet. For example, 100 sq ft at 6 inches wide is 100 / 0.5 = 200 linear ft.
How to calculate square feet from linear feet?
Multiply linear feet by material width in feet. For example, 200 linear ft at 6 inches wide covers 100 sq ft.
How to calculate linear feet for fence?
For a straight fence, use the total run length. For a rectangular layout, use perimeter. Detailed post, panel, and picket estimates belong in the Fence Calculator.
Can I use this calculator with metric measurements?
Yes. Use the Imperial/Metric toggle. Metric mode uses meters, linear meters, and square meters where the selected mode needs area.
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