Stud Calculator

How many studs do I need?

ft
Spacing on center
ends
openings

Order this much studs

30studs

On-center count plus 2 studs per corner and 2 per opening, with 10% extra for crowned or twisted boards.

24 ft wall, 16 in on center19 on-center studs2 corners in red
On-center studs19
Corner studs4
Opening studs4
10% spare3

Count the studs in a wall from length and spacing, with corners and openings added.

How it works

Wall length in inches รท spacing, rounded up, plus one. Corners and openings add extras, then 10% for bad boards.

Before you order

  • Pull your layout from the same end on every wall so sheathing lands on studs.
  • Keep 10% extra for twisted or crowned boards.
  • Use straight boards at corners and around doors.

Common questions

How many studs per foot?

About 1 per foot at 16 inches on center once extras are counted.

Do I need extra studs at corners?

Yes, usually 2 per corner to catch drywall and siding.