Measurement basis
Linear feet measure the combined length of material, independent of its face width. This takeoff calculator combines two groups of repeated straight pieces and an additional measured run, then adds a cutting allowance. It converts that total into a whole stock-piece count for a first purchasing estimate. Use separate calculations for different profiles or sizes so the length totals remain meaningful. This tool is useful for trim, edging, and simple rails, but it does not decide how mixed lengths should be nested into stock; long individual pieces still need to fit the selected stock length.
Geometry, units and worked example
A worked example
Six 8 ft pieces, four 4 ft pieces, and a 10 ft run total 74 linear ft. With 10% allowance, plan 81.4 ft, or seven 12 ft stock pieces by total length.
Enter consistent dimensions
- Group identical cut lengths and count their repetitions.
- Add remaining measured runs of the same material profile.
- Apply an allowance and compare the total with available stock lengths.
Where the model stops
- Do not combine different trim profiles into a single buying count even when they are sold in the same lengths.
- Mitered trim may require extra length at outside corners and for fitting. Measure using the appropriate long point.
- An area in square feet cannot be added directly to a length takeoff; convert it using the material’s effective width first.
Frequently asked questions
What does linear foot mean for trim?
It means one foot measured along the length of a specified trim profile, regardless of that profile’s width.
Can total length guarantee the number of stock boards?
No. Several long cuts may not fit efficiently even when their combined length is less than the purchased total.
How do I convert inches to linear feet?
Divide an inch length by 12, then multiply by the number of repeated pieces before adding the runs.
Read the project guides
- How to Plan Even Board and Batten Spacing Around Outlets
Measure a board and batten accent wall, calculate equal clear gaps, check outlets, and turn the layout into a practical trim order.
- Board Feet vs Linear Feet: How to Read a Lumber Quote
Understand board-foot volume, linear-foot length, actual lumber dimensions, effective coverage, and what each price unit means for a project.
- How to Plan a Cut List with Saw Kerf, Offcuts and Stock Lengths
Plan repeated lumber cuts using actual stock lengths, end trimming, kerf, whole-board rounding, and realistic offcut reuse.
Choose the right estimating model
This tool totals two groups of repeated pieces and an additional measured run. It estimates stock from aggregate length, which does not guarantee that individual cuts fit. Use the Cut List Calculator when repeated cut length, saw kerf and stock length determine the purchase.
Calculation method: JICWH methodology. Examples are planning assumptions, not product recommendations.