Stud Count Calculator

Calculate the number of wall studs needed for a framing project at standard on-center spacing.

Studs Needed
— studs
Includes end stud and extras.

Usage Tip

Order a few spares; bowed or split studs are common and get culled on site.

THE MATH
studs = round up( wall length × 12 ÷ spacing ) + 1 + extra
Wall studs are spaced a set distance on-center, plus one extra to cap the end. Corners and door or window openings need additional studs.
Enter the wall length, choose the on-center spacing (16 inches is standard), and add extra studs for corners and openings.
The base count rounds up and includes the end stud.
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The calculators and tools on Formula Factory are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. Formula Factory makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.