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Stud Finder vs Magnet: Which is Actually Better for Finding Wall Studs?

June 21, 2026

What You’ll Need

A stud finder is more reliable than a magnet for finding studs. Here’s what you need to compare them yourself.

Steps

  1. Test the Magnet. Hold the magnet against the wall. Mark spots where it sticks. These marks show nails or screws, not studs.
  2. Scan with the Stud Finder. Turn on the stud finder. Slide it slowly across the wall. Mark the center of each stud signal.
  3. Compare Results. Compare your magnet marks and stud finder marks. Studs show up in both, or only on the finder.
  4. Verify with a Tap. Knock on the marked spots. A solid sound means a stud. A hollow sound means drywall.
  5. Mark the Studs. Draw a vertical line on each stud with a pencil. Add painter’s tape to make it clearer.

Pro Tips

Tip
On plaster walls, use a digital stud finder. Magnets won’t stick to plaster.
Caution
Avoid drilling into unmarked spots. You could hit electrical wires or plumbing.

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