16 vs 24 inch on center — which should I use?

16" OC is standard residential construction — stronger, better for drywall. 24" OC uses ~33% less lumber — used with engineered lumber or advanced framing techniques. Most building codes allow both.

How many studs do I need per linear foot of wall?

At 16" OC: about 0.75 studs per linear foot + 1 for the end. Rough rule: add 1 stud per foot for a quick estimate. Always add 10–15% for waste and errors.

Wall Stud Calculator — 16" and 24" OC

Quick answer: Enter wall length and stud spacing to calculate studs and plates needed.

Calculate the number of wall studs, top plates, and bottom plates needed to frame any wall. Supports standard 16" and 24" on-center spacing.

Last reviewed: April 2026Report an error

Wall Length (ft)

Stud Spacing (in)

Include Double Top Plate

Stud Count

16 studs, 188.0 total board feet.

Stud Count

Top Plate (linear ft)

40.0

Bottom Plate (linear ft)

20.0

Total Board Feet

188.0

How to Use This Wall Studs Calculator

1Enter the wall length in feet.
2Select stud spacing: 16" OC (standard) or 24" OC (engineered framing).
3Choose single or double top plate.
4Read stud count, plate requirements, and total board feet.

Frequently Asked Questions

: 16" OC is standard residential construction — stronger, better for drywall. 24" OC uses ~33% less lumber — used with engineered lumber or advanced framing techniques. Most building codes allow both.
: At 16" OC: about 0.75 studs per linear foot + 1 for the end. Rough rule: add 1 stud per foot for a quick estimate. Always add 10–15% for waste and errors.

</> Embed this calculator on your website

<iframe src="https://calqpro.com/calculators/stud-calculator" width="100%" height="600" frameborder="0" title="Calqpro Calculator" loading="lazy"></iframe>
<p>Powered by <a href="https://calqpro.com">Calqpro</a></p>

Wall Stud Calculator — 16" and 24" OC

How to Use This Wall Studs Calculator

Frequently Asked Questions

Related Calculators