Easily calculate how many screws you need for plasterboard. Enter sheet size, number, fixing centres, and get total screws and cost. Metric & imperial supported.
Enter your measurements above to see the results.
Convert sheet size and spacing to mm if in imperial. Calculate the number of screws along the perimeter (edges) and the number of screws along each stud line (across the width), then sum for all sheets. Multiply total screws by price per screw for total cost.
If using Metric: 1.2 m x 2.4 m sheets, 10 sheets, edge spacing 200 mm, stud spacing 400 mm, price per screw 0.05 GBP. Edge screws per side: ceil(1200/200)+1=7, other side: ceil(2400/200)+1=13. Perimeter screws: 2*(7+13)=40. Stud lines: floor(1200/400)-1=2. Stud line screws: 2*(13)=26. Screws per sheet: 40+26=66. Total screws: ceil(10*66)=660. Total cost: 660*0.05=33.00 GBP.
The number of screws required depends on the size of each plasterboard sheet, the spacing of screws along the edges, the spacing between studs, and the total number of sheets. This calculator takes all these factors into account for a precise result.
For most plasterboard installations, screws are spaced at 200 mm (8 in) along board edges and 400 mm (16 in) across studs. Always check local codes and manufacturer guidance for best practices.
Select screws of suitable length, typically 25–38 mm (1–1.5 in) for standard 12.5 mm (1/2 in) board. Use corrosion-resistant screws for damp areas. The right screw ensures a secure, long-lasting fix.
Input your cost per screw and preferred currency to instantly see the total screw cost for your project. This helps you budget accurately for materials before starting your drywall installation.
Switch between metric (metres, millimetres) and imperial (feet, inches) systems as needed. The calculator automatically converts and labels all measurements and results accordingly.
Typically, a standard 1.2 x 2.4 m (4 x 8 ft) plasterboard sheet requires about 50–60 screws, but the exact number depends on your screw spacing and stud centres. Use the calculator above for a precise count.
For most applications, screws should be spaced every 200 mm (8 in) along edges and every 400 mm (16 in) across studs. Always follow manufacturer and local code recommendations.
Use 25–38 mm (1–1.5 in) screws for standard 12.5 mm (1/2 in) plasterboard. Thicker boards or double layers may require longer screws.
Use a drywall screwdriver or drill, drive screws until just below the surface without breaking the paper face, and avoid overtightening for a secure fix.
On average, you’ll need about 20–25 screws per square metre (2–2.5 per square foot), depending on your fixing pattern and sheet size. The calculator gives an exact figure for your setup.
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