What this calculator does
Wall stud count works out studs needed for a wall on a chosen centre spacing, plus openings. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
FormulaStuds = ⌈wall length / spacing⌉ + 1, plus 2 per door/window opening
The inputs explained
| Field | What to enter |
|---|---|
| Wall length (m) | A number, measured in m. Starts at 6. |
| Stud spacing | Choose from 400 mm centres, 406 mm (16 in) centres, 600 mm centres, 610 mm (24 in) centres. |
| Doors | A number. Starts at 1. |
| Windows | A number. Starts at 1. |
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How the answer changes with wall length
Every other input is held at the calculator’s starting values while wall length varies. Select any row to load that scenario into the calculator.