Stud Finder Magnets

Yes. A strong magnet can be used as a simple stud finder by locating the steel screws or nails used to fasten drywall or other wall panels to the studs. When the magnet passes over a hidden ferrous fastener, it is attracted to the fastener and helps identify the stud's location.

Slowly move a strong magnet across the wall until you feel it pull toward a hidden screw or nail. Finding additional fasteners vertically above or below the first location can help confirm the path of the stud. Our Finding Studs with Magnets article covers different methods, tips and magnet choices for locating studs.

Strong neodymium magnets work well for finding studs because they can detect small steel fasteners through drywall and other wall materials. Thumbtack-style magnets are easy to grip and move across a wall, while plastic-coated magnets provide a softer surface to help prevent scratches. Stronger magnets can be useful when the wall covering is thicker or the hidden fasteners are small.

A magnetic stud finder generally does not detect the wood stud itself. Instead, it detects ferrous screws, nails or other steel fasteners used to attach the wall material to the stud. The position of these fasteners can then be used to determine where the stud is located.

They can, but increasing the distance between the magnet and the hidden fastener reduces the magnetic attraction. Thicker drywall, plaster or other wall coverings may therefore require a larger or stronger neodymium magnet to reliably locate the fasteners behind the surface.

A magnetic stud finder works when the wall construction includes steel or other ferrous fasteners that the magnet can detect. If nonmagnetic fasteners or construction methods without accessible ferrous hardware are used, a magnet may not be able to identify the stud location.