What it works out
Enter the length of a straight wall. With the on-centre spacing from your stored values, you get the stud count and an order quantity with waste. The count always closes the far end with a stud, even when the spacing does not divide the length evenly. It covers common studs in one row only: add plates, corners, openings and blocking yourself.
The formula
- Studs
- length ÷ spacing, rounded up, + 1 end stud
In words: Studs = length divided by spacing, rounded up, plus 1 end stud
Worked example
A straight 20 ft wall with studs 16 in on centre
- Length 20 ft = 240 in
- Spacing 16 in
- 240 ÷ 16 = 15 spaces
- Studs = 15 + 1 end stud = 16
The count always closes the far end with a stud, even when the spacing does not divide evenly.
Good to know
- Common studs in one row only. Add plates, corners, openings and blocking yourself.
- Spacing comes from your stored on-centre value.
- A calculator, not a building-code check: confirm local rules with your building authority.
Questions
Does it count corners and openings?
No. Add those yourself.
What if the length does not divide evenly?
The count rounds up and still ends with a stud at the far end.