Wall Stud Calculator
Calculate total studs for a complete room including corners and door/window openings. Whole-room framing estimator.
Formula & Explanation
This calculator estimates the total studs required to frame all walls in a room. **Base Studs** = floor(Perimeter in inches ÷ Spacing in inches) **Total Studs** = Base Studs + Corner Studs + Opening Studs The base count assumes studs placed at regular intervals around the entire perimeter. Corner studs (typically 4 for a rectangular room) and opening studs for doors and windows are added separately. Example: A 40 ft perimeter at 16" o.c.: - Base: floor(480 ÷ 16) = 30 - Corners: +4 - Total: 34 studs (plus additional studs if there are openings)
Assumptions
- •Corner studs: 4 for a rectangular room (3 studs per corner, some shared)
- •Opening allowance: 3-5 additional studs per door or window (for framing headers and jambs)
- •Standard 16" o.c. spacing is typical for residential; 24" o.c. is common in commercial or low-load conditions
- •Does NOT include top plates, bottom plates, blocking, bridging, or bracing-add those separately
- •Assumes all walls are interior at uniform height (does not account for sloped ceilings or split levels)
Example Calculation
A 10×10 ft room (40 ft perimeter) at 16" o.c. with 4 corners and openings for one door and one window requires 40 studs total.
Inputs
Results
Total Stud Counts by Room Size and Spacing
| room_size | perimeter_ft | studs_16oc_no_open | studs_16oc_2_open | studs_24oc_no_open |
|---|---|---|---|---|
| 10×10 | 40 | 34 | 40 | 24 |
| 12×12 | 48 | 40 | 46 | 28 |
| 14×16 | 60 | 49 | 55 | 35 |
| 16×20 | 72 | 58 | 64 | 42 |
Frequently Asked Questions
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