Calculate how many wall studs and plates you need for a wall from its length and stud spacing, with extra studs for corners and openings.
About this tool
Calculate how many wall studs and plates you need for a wall.
How to use Stud Calculator
- Enter the wall length.
- Choose the stud spacing and count corners and openings.
- Read the studs and plate lumber needed.
Worked example
A 20 ft wall at 16 in on center needs 16 studs, plus extras for two corners and one door, about 24 with waste.
16 or 24 inch spacing?
16 in is standard for most walls; 24 in suits non-load-bearing walls and advanced framing.
Why double top plates?
They tie walls together and spread loads from above.
- Stud Calculator — Calculate how many wall studs and plates you need for a wall.
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