Stud Wall Framing Calculator — ft, studs, cost
How to use this calculator
Enter wall length and height, select stud size and spacing, then configure plates, corners, and openings. Results update instantly with studs, plates, headers, board feet, and an interactive framing diagram.
Openings — click "Add Opening" to add doors and windows. Set the type, width, height, and offset from the left edge. The calculator figures king studs, jack studs, cripples, headers, and sill plates per opening.
Corners — standard 3-stud or California 4-stud assemblies.
Sheathing — optional 4x8 plywood/OSB sheet count.
Saved Calculations
| Time | Wall | Studs | Plates | Board ft | Sheets | Total $ |
|---|
Lumber Size Reference
Common dimensional lumber — nominal vs actual sizes:
| Nominal | Actual | Common Use |
|---|---|---|
| 2×4 | 1.5" × 3.5" | Interior walls, non-load-bearing |
| 2×6 | 1.5" × 5.5" | Exterior walls, load-bearing |
| 2×8 | 1.5" × 7.25" | Headers (short spans up to 4 ft) |
| 2×10 | 1.5" × 9.25" | Headers (medium spans up to 6 ft) |
| 2×12 | 1.5" × 11.25" | Headers (long spans up to 8 ft) |
Standard lengths: 8 ft, 10 ft, 12 ft, 14 ft, 16 ft. Pre-cut studs: 92-5/8" (for 8 ft walls with plates) and 104-5/8" (for 9 ft walls).
How to Calculate Stud Wall Framing Materials
This stud wall calculator estimates the number of studs, plates, headers, king studs, jack studs, cripple studs, corner assemblies, total board feet, and optional sheathing sheets for wood-frame wall construction. Enter wall length and height in feet and inches with 1/8" precision, select stud size (2x4 or 2x6), spacing (16" or 24" on center), and plate configuration per IRC R602 residential framing standards.
Framing Formulas
Field studs = (wall length / spacing) + 1, minus studs displaced by openings. Plates = wall length / standard board length, multiplied by number of top plates + bottom plate. Board feet = count x (nominal width x nominal thickness / 12) x length in feet. Each opening adds 2 king studs, 2 jack studs (trimmer), a header, cripple studs above the header, and (for windows) cripple studs below the sill plate.
Corner Assemblies
A standard corner uses 3 studs arranged to provide nailing surface on both sides of the corner. A California (or 3-stud with drywall clip) corner uses 4 studs for improved insulation and nailing. The calculator accounts for these extra studs at each corner location.
Export & Save
Save calculations to history and export as text, CSV, JPG, or PDF. All estimates are for planning — verify with local building codes and a licensed contractor.
