Wall Framing Calculator
Enter wall length, height, stud spacing, and opening count to get the full lumber list: studs, top plates (double), bottom plate, and header material. Includes a cost estimate.
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Top Pick2×4×8 Studs — Home Depot~$4.98/stud* Affiliate links — we may earn a commission at no cost to you.
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How to Use This Calculator
- 1Enter your measurements in the fields above. Use the units shown next to each field (ft, in, etc.).
- 2Click Calculate to get your material estimate instantly.
- 3Review the highlighted result — it shows the key quantity you need to order.
- 4Use Copy Results to save your estimate, or bookmark the URL — your inputs are encoded in the link.
Pro tip: Always add 10% to your material order to account for waste, cuts, and defects.
Frequently Asked Questions
How many studs do I need for a 20-foot wall?
At 16" OC spacing, a 20-foot wall needs 16 field studs plus 1 end stud = 17 studs minimum. Add 4 extra studs per door or window opening (2 king + 2 jack studs each).
Should I use 16" or 24" OC stud spacing?
Use 16" OC for most residential framing — it's code-compliant for all loads, supports any drywall thickness, and allows standard window/door placement. Use 24" OC (advanced framing) only when maximizing insulation cavity space in exterior walls.