Wall Stud Calculator (Studs and Plates)
Enter the wall length, stud spacing and the number of corners and openings.
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Wall Stud Calculator (Studs and Plates) by TheCalcTools
How the Wall Stud Calculator (Studs and Plates) works
One stud every 16 (or 24) inches along the wall, plus one at the end: ⌊length × 12 ÷ spacing⌋ + 1. Corners and wall intersections need extra studs for backing, and each opening needs king and jack studs.
Walls usually have one bottom plate and a doubled top plate, three times the wall length. Check local code for spacing, stud size and headers.
The formula
Worked example
Using the default values shown in the calculator:
| Wall length (ft) | 24 |
|---|---|
| Stud spacing on centre | 16 in |
| Corners or wall intersections | 2 |
| Doors and windows | 2 |
| Extra for waste | 10 % |
- A 24 ft wall at 16 in on centre needs 19 studs, plus 8 for corners and openings.
- With 10% waste, buy 30.
Result:
| Studs to buy | 30 |
|---|---|
| Studs on the layout | 19 |
| Plates: bottom plus double top (linear ft) | 72 |
| Extra studs for corners and openings | 8 |
Frequently asked questions
How many studs for a 24-foot wall at 16 inches?
19 on the layout, plus extras for corners and openings.
Sources and further reading
- Wikipedia: Framing (construction)
- International Code Council: 2021 International Residential Code, R312 Guards
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This calculator gives estimates for information only. Check important results independently before you rely on them. See our disclaimer.