Wall Framing Stud Calculator
Calculate how many studs you need for a wall from length and on-center spacing, plus plates and headers, free right in your browser.
Enter Values
Before you rely on this: First-pass guide only. Verify safety-critical or regulated work against the relevant standards, your project requirements and a qualified professional.
How to use this calculator
- Enter the wall length (m) and stud spacing (mm).
- Read the stud count and plate length.
How it works
Studs = wall length ÷ spacing, rounded down, plus one for the end stud.
Worked example
6 m wall at 450 mm centres. 14 studs.
Common mistakes
- Forgetting extra studs for corners, door/window openings and junctions.
- Common centres are 450 mm or 600 mm — check your spec.
Frequently asked questions
How many studs do I need for a wall?
Wall length ÷ stud spacing, plus one, then add studs for openings, corners and ends. The tool figures this from your spacing.
What stud spacing should I use?
450 mm or 600 mm centres are common (16 or 24 inches); closer spacing suits heavier cladding and load-bearing walls.
Does this account for openings?
No — it's a straight run. Add jack/king studs for doors and windows, plus corners and intersections.
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Cite this tool
Zerdly. (2026). Wall Framing Stud Calculator. Retrieved from https://www.zerdly.com/tools/wall-framing-stud-calculator/
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.