Stud Wall Framing Calculator — m, studs, cost
How to use this calculator
Enter wall length and height in meters or centimeters, select stud size and spacing, then configure plates, corners, and openings. Results update instantly with stud count, plates, headers, timber volume in m³, 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 1220×2440 mm plywood/OSB sheet count.
Saved Calculations
| Time | Wall | Studs | Plates | Volume m³ | Sheets | Total |
|---|
Lumber Size Reference
Common timber sizes (metric):
| Size (mm) | Common Use |
|---|---|
| 38 × 89 | Interior walls, non-load-bearing |
| 38 × 140 | Exterior walls, load-bearing |
| 38 × 184 | Headers (short spans up to 1.2 m) |
| 38 × 235 | Headers (medium spans up to 1.8 m) |
| 38 × 286 | Headers (long spans up to 2.4 m) |
Imperial equivalents:
| Nominal | Actual | Metric Equiv. |
|---|---|---|
| 2×4 | 1.5" × 3.5" | 38 × 89 mm |
| 2×6 | 1.5" × 5.5" | 38 × 140 mm |
| 2×8 | 1.5" × 7.25" | 38 × 184 mm |
| 2×10 | 1.5" × 9.25" | 38 × 235 mm |
| 2×12 | 1.5" × 11.25" | 38 × 286 mm |
Standard lengths: 2.4 m, 3.0 m, 3.6 m, 4.2 m, 4.8 m. Pre-cut studs: 2352 mm (for 2.4 m walls with plates).
How to Calculate Stud Wall Framing Materials (Metric)
This stud wall calculator estimates the number of studs, plates, headers, king studs, jack studs, cripple studs, corner assemblies, total timber volume in m³, and optional sheathing sheets for wood-frame wall construction. Enter wall length and height in meters or centimeters, select stud size (38×89 or 38×140 mm), spacing (400 or 600 mm on centre), and plate configuration per EN 1995-1-1 (Eurocode 5) timber design standards.
Framing Formulas
Field studs = (wall length / spacing) + 1, minus studs displaced by openings. Plates = wall length / standard timber length, multiplied by number of top plates + bottom plate. Volume (m³) = cross-section area × total linear metres of all framing members. Each opening adds 2 king studs, 2 jack studs, a header, cripple studs above the header, and (for windows) cripple studs below the sill plate.
Corner Assemblies
A standard corner uses 3 studs to provide nailing surface on both sides. A California corner uses 4 studs for improved insulation and nailing. The calculator accounts for 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 qualified engineer.
