Wall stud spacing formula
studs per wall = ceiling(wall length ÷ spacing) + 1plate length = wall length × walls × plate rowsThe estimate adds your extra studs before applying the waste allowance and rounding to whole pieces.
Wall stud calculator
Estimate studs, plate length, and stock boards for straight walls at your selected on-center spacing.
Enter the wall framing details
Group equal wall lengths together and add extra studs for corners, openings, intersections, and blocking.
The regular stud grid is only the starting count
The spacing calculation includes end studs and user-entered extras, but it does not infer corners, intersecting walls, window and door assemblies, hold-downs, shear details, or concentrated loads.
- Draw each wall and count kings, jacks, cripples, and built-up posts.
- Separate plates by required species, treatment, and stock length.
- Verify spacing, grade, bracing, headers, and connections from the approved design.
Add project-specific members
Stud spacing, lumber size, grade, wall height, openings, loads, fastening, and bracing must match the approved design and local requirements. Use the extra-stud field for known corners and openings; this calculator does not engineer the wall.