Drywall Screw Calculator
A drywall screw calculator estimates how many screws you need by applying about one screw per square foot of drywall, a common rule of thumb that accounts for field and edge fastening. Enter your total drywall area below to get the screw count and an approximate number of boxes.
~1 screw per sq ft; ~320 screws per 1 lb box of 1-1/4 in screws (approx).
- Area
- 0 sq ft
Enter your total drywall area to estimate screws.
Estimate only. Material yields vary by product and brand; check your product label and add a margin.
How Many Drywall Screws Do You Need?
To estimate drywall screws, plan on about one screw per square foot of drywall, which covers the spacing used along edges and in the field of each sheet. A 1,000 square foot job needs roughly 1,000 screws. Spacing standards put screws about every 12 to 16 inches, and ceilings are fastened more densely than walls, so round up. The calculator converts the count to approximate boxes.
What Length Drywall Screws Should You Use?
Screw length depends on drywall thickness: 1-1/4 inch screws are standard for half-inch drywall on wood studs, while 5/8 inch drywall or metal framing may need different lengths. The count is similar regardless of length, since it is driven by area and spacing, but buy the right length for your assembly. The calculator estimates quantity; match the length to your drywall and framing.
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Frequently asked questions
- How many drywall screws do I need?
- Plan on about one screw per square foot. A 1,000 square foot job needs roughly 1,000 screws, with ceilings fastened more densely than walls.
- What size drywall screws should I use?
- 1-1/4 inch screws are standard for half-inch drywall on wood studs. Thicker drywall or metal framing may need different lengths; the count stays similar.