How to Use This Calculator
- Measure one wall section and enter its length and height.
- Choose spacing, count door and window openings, and set waste.
- Enter an editable linear-foot price and calculate the takeoff.
Calculation Formula
Worked Example
A 20 ft by 8 ft wall at 16 in spacing with one door, two windows, and 10% waste estimates 31 studs and 66 linear ft of plates. Total modeled lumber is 314 linear ft; at $1.20 per ft, estimated cost is $376.80.
Factors That Affect the Estimate
- Corners, intersections, and advanced framing method
- Header, jack, cripple, and king-stud design
- Blocking, fire stops, and backing
- Stock lengths and cutting optimization
- Local wind, seismic, snow, and energy code
Frequently Asked Questions
Does this calculator size headers?
No. Header size and support require plans, loads, spans, and local code information.
Why are four studs added per opening?
It is a simplified allowance for common king and jack framing. Actual assemblies vary.
Are plates based on two or three runs?
The estimate uses one bottom plate and two top plates.
Does total lumber include sheathing?
No. It includes modeled studs and plates only.
Should I round stud quantities?
The calculator rounds up because partial studs cannot be purchased as whole pieces.
Important Disclaimer
This calculator provides a planning estimate only. It is not a bid, appraisal, or professional construction advice. Confirm quantities, code requirements, labor, permits, taxes, site conditions, and current local prices with qualified professionals before making financial decisions.