Stud calculator

Enter your wall length and stud spacing to get a wall framing stud count, including extra studs for corners and openings.

Wall length
ft
Stud spacing
Corners
Doors & windows
Result
Studs needed24
Base wall studs19
Corners & openings5

Estimate only — assumes 2 studs per corner and 3 per opening (king, jack, and cripple).

How wall framing stud count works

Base stud count is your wall length divided by stud spacing (16 in / 400 mm on-center is standard for most walls; 24 in / 600 mm for some non-load-bearing walls), plus one extra stud to close out the run. Each corner typically adds 2 studs, and each door or window opening adds about 3 for the king, jack (trimmer), and cripple studs.

Frequently asked questions

16 in (400 mm) on-center is standard for most load-bearing walls. 24 in (600 mm) is sometimes used for non-load-bearing interior walls to save material — check your local code and framing plan.

Every door or window needs king studs (full height, either side) and jack studs (support the header), plus sometimes cripple studs above or below — that's typically 3 extra studs per opening beyond the base count.