Stud Calculator
Estimate studs needed for wall framing
Total length of the wall
On-center spacing
Standard 36" door
Standard 36x48" window
Field Studs
—
studs
Extra (corners/openings)
—
studs
Total Studs
—
studs
Top/Bottom Plates
—
boards
Estimated Cost
—
USD
Disclaimer: Results are estimates based on standard formulas. Not a substitute for professional advice from a licensed contractor, engineer, or architect. Verify all calculations before making purchasing or construction decisions.
How to Use This Calculator
Our stud calculator accounts for field studs, corners, openings, and plates for accurate framing estimates.
- Measure total wall length
- Choose stud spacing
- Count doors and windows
- Enter specifications
- Add 10% for waste and miscuts
Expert Insights
Smart analysis for your Framing & Structure project
Stud Spacing Optimization
16" OC for load-bearing, 24" OC allowed for non-bearing. AI optimizes stud count based on wall type and building code requirements.
Header Size Calculator
AI cross-references span and load against IRC Table R602.7 to recommend proper header sizes for your openings.
Structural Tie Requirements
Rafter ties prevent roof spread. Double top plates at wall intersections. AI flags critical structural connections per IRC code.
Calculation Formula
Field studs = (Wall length / Spacing) + 1
Extra studs = 6 (corners & wall ends) + 4 per door + 4 per window (king + jack studs)
Plates = Wall length x 3 / Board length
Frequently Asked Questions
How far apart should wall studs be?
16" on center for load-bearing walls, 24" for non-load-bearing interior walls.
How many studs for a 20-foot wall?
With 16" spacing and no openings: about 16 field studs + 6 extra for corners = 22 studs. Each door or window adds about 4 more studs (king + jack studs), so a wall with 1 door and 2 windows needs about 34.