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The 9 Best Stud Finders, Tested and Reviewed

Never miss a stud again with these foolproof devices

Assorted stud finders, including Craftsman, Bosch, and The StudBuddy, displayed with wood pieces on a textured surface

The Spruce

If you plan on hanging anything over about 20 pounds in your home, you'll need a stud finder to help you locate a stud inside the wall to act as a secure anchor. The best stud finders use magnets to locate nails or screws that hold the drywall to studs or electrical fields to sense the density of objects behind your drywall, while professional-grade tools use radar.

To find the best stud finder for most projects, we ordered over 30 different models to our lab in Des Moines, Iowa, and put them to work on a series of custom-built walls to see how each one performed under different construction situations. With the information gathered from those tests, we identified the best stud finders for DIY projects around your home.

What We Like
  • Wide coverage

  • Accurate, fast results

  • Always in deep scan mode

What We Don't Like
  • Doesn't detect live wires

  • Can't differentiate between metal studs and pipes

We think the electronic Franklin Sensors ProSensor 710 Precision is the best stud finder because it gives you an accurate and detailed look into your walls. Its 13 sensors simultaneously "look" behind the walls (it can also be used to find joists underneath the flooring) to pinpoint the location of wooden studs and metal objects, such as pipes, easily and accurately.

One of the standout features of the ProSensor 710 is its effortless usability; there's no calibration required. Unlike some wall stud finders, this one is ready to go right away. It also shows you the edge and center of the stud simultaneously, which takes a lot of work out of the whole process.

During testing, we found that the ProSensor 710 located studs, both metal and wood, quickly and accurately. We didn't have to pass the device back and forth over the wall for more than a few seconds before the 13 indicator lights started popping.

This model is always in deep scan mode, so even if the walls are thicker than a standard .75 inches, you get an accurate reading—we found the results were very accurate over all three types of tested surfaces, including lath and plaster, drywall, and paneling. The manufacturer claims the tool has a detection depth of 1.6 inches ideally and 1.1 inches in reality, which we found to be true.

Since this stud finder was very accurate in our tests and its large, comfortable handle made it easy to hold, we recommend it over all the other options. However, it doesn't detect live wires, nor does it have a battery life indicator or other extra features.

Sensor Type: Electronic | Deep Scan: Yes | Live Wire Detection: No

What We Like
  • Small and lightweight

  • Accurate readings despite lack of features

  • Easy to use

What We Don't Like
  • Requires you to measure for the center of the stud

  • Struggles with paneling and plaster

This reasonably priced stud finder is nothing fancy, but if you just need a simple stud finder to detect wood and metal studs—not electrical wiring or pipes—then this is a good addition to your toolbox. We found it very easy to calibrate—just hold the button down until the red light goes off—and easy to use, as well.

Unlike more premium stud finders, this one does not locate the center of a stud itself. That means you need to locate the edges yourself, which is a time-consuming process. Even though it's more than half the price of the Franklin Sensors ProSensor 710 Professional Stud Finder (our best overall pick), it's just as accurate. We found the process to be easy in practice, but this model does struggle a bit with paneling and plaster.

This stud finder has a detection depth of 3/4-inch, which is less than many other stud finders, but generally sufficient for finding studs (except for garage walls and ceilings with double layers of sheetrock for fire protection). It's small and lightweight, making it easy to carry in a pocket or add to your tool kit. We think it's a good option if your walls aren't too thick and you only need a stud finder for occasional use.

Sensor Type: Electronic | Deep Scan: No | Live Wire Detection: No

What We Like
  • Penetrates even lath and plaster walls

  • Scans up to 4 inches deep

  • Detects both magnetic and nonmagnetic metals

  • Easy to use

What We Don't Like
  • Doesn't detect live wires or wood alone

Metal is often missed by typical stud finders calibrated for wood studs, but there can be many types of metal support materials within your walls, including nails, screws, rebar, and metal pipes. The Zircon MetalliScanner M40 is specifically designed to detect a wide variety of ferrous (magnetic) and nonferrous metals behind floors, walls, and ceilings.

In our tests, this stud finder found everything it was supposed to, including wood and metal studs, copper pipes, and nails. It had no problems detecting objects behind our drywall, plaster, and paneled test wall, but it wasn't able to detect live wires. It has an impressive depth scan of up to 4 inches deep for magnetic materials and 2 inches for non-magnetic objects.

We appreciated how easy this stud finder is to use. Its coil lights up in red as it gets close to the hidden stud or metal pipe and then switches to blue light when it's right over the object being scanned. Not only that, but there's an audible tone when the device detects metal. Plus, it's comfortable to hold.

Sensor Type: Electronic | Deep Scan: Yes | Live Wire Detection: No

What We Like
  • No batteries required

  • Includes bubble level

  • Accurate and easy to use

What We Don't Like
  • Doesn't detect live wires

  • Doesn't detect copper or other non-magnetic metals

Magnetic stud finders are an older type of stud finder, but they can still be effective. Using a powerful rare-earth magnet, the CH Hanson 03040 locates ferrous nails and screws that hold drywall to studs and studs to other parts of the frame. It doesn't sense studs directly, but we found that it does provide a good idea of where studs are behind the wall.

We like that there's no need to calibrate this tool and no batteries to install, so it's always ready to go. We found it to be very accurate for finding wood or metal studs based on the nails and screws within them, but be aware that magnetic stud finders like this one will not detect copper pipes, other non-magnetic materials, or live wires.

In our tests, the device worked over drywall, paneling, and plaster with ease, but it did take longer to detect nails in wooden studs than in metal studs. When passing over ferrous metal, the stud finder "clings" slightly to the underlying magnetic object. There's no other indicator, so you really need to pay attention.

Sensor Type: Magnetic | Deep Scan: No | Live Wire Detection: No

What We Like
  • No calibration required

  • Always in deep scan mode

  • Nine sensors for extra accuracy

What We Don't Like
  • Doesn't detect live wires

  • Can't differentiate metal studs and pipes

If you need a stud sensor for a DIY project such as hanging shelves, installing a wall-mounted television, putting up new lighting fixtures, or similar home projects, then you'll appreciate the Franklin Sensors ProSensor M90 as much as we did. This easy-to-use and accurate stud finder doesn't need any calibration, so you can get right to work.

With nine sensors, this device had no problem detecting wood and metal studs and metal pipes behind most common wall materials. In our lab tests, it worked equally well through plaster, drywall, and paneling. Depending on the surface materials, this tool's depth detection is between 1 and 1.5 inches, and it's always in deep scan mode.

The sensor lights trigger as the tool moves over a hidden stud; generally, two of the lights come on as the tool meets the stud's edge, and three lights hold steady once the stud sensor is over the center of the stud. That makes it easy to find the full width of the stud. We did find that it was best to move this stud finder fairly slowly along the wall, as overly fast passes make it a little more difficult to pinpoint the full width of the stud.

Sensor Type: Electronic | Deep Scan: Yes | Live Wire Detection: Yes

What We Like
  • Works well over plaster

  • Very easy to use

  • Strong indication when studs located

What We Don't Like
  • Doesn't work quite as well over paneling

  • Cannot detect non-ferrous metals or live wires

If you just want a basic stud finder that is easy to use, we highly recommend the StudPop Original Magnetic Stud Finder. This simple device has a center trigger that "pops up" when the magnet slides over a hidden metallic object, so we found it easier to use than the CH Hanson 03040 (our best magnetic pick).

We had fun testing this stud finder, which requires no calibration or batteries. We found that it didn't really matter if we slid the tool quickly or slowly; it responded very accurately either way when moving over metal studs or over wooden studs with embedded steel nails and screws.

In our tests, the StudPop performed best on drywall and plaster but wasn't quite as responsive over paneling. According to the manufacturer, it can also be used over lath or tile on top of drywall or plaster.

The StudPop cannot detect copper pipes, which are non-magnetic, but it can respond to pipes made of ferrous metals. It doesn't detect wiring either.

While this stud finder does not detect the edges of wood or metal studs, as most electronic stud finders do, it responds with a pop and a feeling of magnetic "grip" when moving over stud centers, and we found it very easy to use and reliable in its response.

Sensor Type: Magnetic | Deep Scan: No | Live Wire Detection: No

What We Like
  • Removable magnets can be used to mark position of studs

  • Easy to use

  • Strong detection

What We Don't Like
  • Not as sensitive over paneling

Like other magnetic stud finders, the StudMark works by "sticking" to ferrous metals, including steel nails, screws, and studs, behind the wall. In our tests, the StudMark did well at detecting metal behind drywall and plaster, although it was a little harder to feel the magnetic grip when using the device on paneling.

What we especially like about this tool are the two teardrop-shaped magnets that can be removed from the body and used to mark the placement of studs. Thus, the user can easily indicate the position of up to three studs.

If you don't want to use the magnets, then you can easily use the tool's small indentation to make precise pencil marks. That's very handy when hanging something large enough to overlay more than one stud, like a flat-screen television, shelf, or large mirror.

The StudMark is easy to use and requires no calibration or batteries. We just slid it along our test wall until we felt the magnetic response, which told us that a stud was buried underneath. Note that like other magnetic stud finders, this one cannot detect copper pipes or live wiring, although it will respond to ferrous metal pipes and rebar.

Sensor Type: Magnetic | Deep Scan: No | Live Wire Detection: No

Best for Plaster Walls

Mecurate Stud Finder

Mecurate Stud Finder Wall Scanner displayed on a tan floor
PHOTO: The Spruce
What We Like
  • Performs very well over plaster

  • Detects live wires

  • Deep scan mode

What We Don't Like
  • Does best with very slow passes over the wall

While newer homes generally have drywall, there are many older homes that still have plaster walls. And while just about any stud finder works well over drywall, many are challenged by plaster. If you're looking for the best stud finder for plaster walls, then the Mecurate Wall Scanner is our recommendation.

In our test lab, this device performed beautifully over plaster, easily detecting wood studs, metal studs, and live wires buried beneath the surface. It also worked well on drywall and paneling but required much slower passes for consistent accuracy on these surfaces.

There are four scanning modes on this device: stud mode, with a 3/4-inch detection depth, deep mode with 1.5-inch depth detection, metal mode for 2-3/8-inch depth detection, and AC mode, which has a 2-inch depth detection.

You can also turn on an audible beep and the LED indicators; we found this made it easier to quickly determine the location of studs. We also appreciated how this tool clearly shows both the edges and the center of the underlying stud, and the backlit display was easy to read even in dim lighting.

Sensor Type: Electronic | Deep Scan: Yes | Live Wire Detection: Yes

Best for Hanging Heavy Items

Ryobi Whole Stud Finder

Ryobi Whole Stud Finder displayed on a tan floor
PHOTO: The Spruce
What We Like
  • Shows the entire stud

  • Indicates which direction to move the scanner

  • Built-in stud marker

What We Don't Like
  • Does not detect live wires

  • Works best when moved slowly

If you are hanging something heavy, such as a cabinet, shelf, or large mirror, you need to securely fasten the item to more than one stud. Before beginning such a project, it's helpful to know exactly how wide each stud is and its center. After a brief learning curve, the Ryobi Whole Stud Finder provided us with that information quickly and accurately.

As the device moves over a stud, LED lights indicate whether the stud sensor is over the center of the stud and, if not, in which direction it should be moved to find the center. Once centered over the stud, a quick push of a button marks the spot with a small mark.

In our tests, the stud finder worked very well over drywall, plaster, and paneling, but we did find that it worked best when moved slowly across these surfaces. It was easy to use with just one hand and comfortable to hold. This stud finder does require calibration before every use, but it's not difficult to do; just push the button while holding the tool against the wall and wait a few seconds. It automatically searches up to 1.5 inches behind the wall, so switching between modes is unnecessary.

Sensor Type: Electronic | Deep Scan: Yes | Live Wire Detection: No

Final Verdict

If you want an accurate, fast, and easy-to-use stud finder, we recommend the Franklin Sensors ProSensor 710. It performed very well in all of our tests and doesn’t need to be calibrated before use like many other electronic stud finders. If you're working on a larger project and would like to mark multiple studs at once, the Calculated Industries StudMark Magnetic Stud Finder has magnetic markers and a pencil indent to make it easy.

Two people using stud finders on either side of a wall

The Spruce

How We Tested the Stud Finders

We purchased 30 stud finders, some electronic and some magnetic, and tested them in The Lab in Des Moines, Iowa. Our team of product testers included handypeople and DIYers who use stud finders regularly, as well as people who had never used such a tool previously. All of the testers started by reading the instructions included with the stud finder, taking note of any required calibration procedures. We then turned the device on and calibrated if necessary. 

We set up two testing walls in our lab. Both walls concealed electrical wires, PVC pipe, and copper pipe, but one wall also included wooden studs, while the other included metal studs. The surface of both walls was divided into three sections: one covered with drywall, one with plaster, and one with paneling.

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The Spruce Team Finds the Best Stud Finders

Our team then tested the stud finders on both walls, being sure to cover each section. Each stud finder was first tested with a slow pass—around 20 seconds to cover three feet—and then a quick pass of five seconds over the same surface.

We noted whether or not the stud finder was able to accurately detect the underlying materials at each speed, as well as how easy it was to hear or read the tool’s indicators. 

If the stud finder included additional features, such as depth level adjustment, battery indicator, bubble level, or center marker, we evaluated those features as well.

How to Choose the Best Stud Finder

Understand the Types of Stud Finder Sensors

Stud finders can use electric sensors, magnets, or radar to sense the presence of studs inside a wall. Most stud finders generate a small electrical field and detect changes in density behind drywall (indicating a stud) based on changes in the field. Magnetic stud finders actually locate nails in the studs, while radar stud finders can identify studs, pipes, wiring, and other objects inside walls using radio waves.

Electronic stud finders, such as the Franklin Sensors ProSensor 710 (our overall best stud finder recommendation), run on batteries. They work by detecting changes in the density of the wall by measuring changes in a small electrical field. They typically have a visual display that pinpoints the location of the stud, and they often have an audible signal as well. Electronic stud finders generally sense objects buried deeper inside the walls than magnetic stud sensors, but they also cost more.

Hand holding the Calculated Industries 7310 StudMark Magnetic Stud Finder against a wall
The Calculated Industries 7310 StudMark Magnetic Stud Finder is easy to grip and pass over a wall to locate metal screws.

The Spruce

Magnetic stud finders, including our top magnetic pick from CH Hanson, contain rare earth magnets that don’t actually detect wood inside the walls; instead, they detect the metal in the screws or nails holding the studs in place. These stud finders are fairly inexpensive but won’t show you the exact edges of the stud, and they don’t penetrate into the wall as deeply as their electronic counterparts.

The most expensive and accurate stud finders use radar to visualize the space behind your wall, and they can sense things like wiring and PVC pipes in addition to studs. We don't currently recommend any of these since they're too expensive to justify the price unless you're a professional.

Consider the Sensor Depth and Adjustability

Some electronic stud finders let you adjust the depth to which the sensors penetrate the wall. Typically, studs are buried around 1/2 to 3/4 inches behind drywall, but there are times you want to go deeper to find other hidden objects. If you're scanning floors for joists rather than walls, you may also need to adjust sensor depth.

Many stud finders with this feature can penetrate a surface up to 1.5 inches deep. The Mecurate Wall Scanner (our best for plaster walls pick) has four scanning modes for various detection depths up to 2-3/8 inches.

While adjustable sensors are useful in many applications, they can have issues with some materials, like locating studs behind ceramic tile. In that case, you'll typically need a stud finder that uses radar, but a magnetic stud finder or powerful rare earth element may work.

Look for Alternate Material Sensing Abilities

While all stud finders detect wood (magnetic stud finders actually detect the nails or screws in the wood rather than the wood itself), other types of materials might be hidden behind your walls, including plastic or metal pipes and AC wiring.

Some stud finders have modes for detecting metal pipes and rebar, and many also can detect live wires, including the Mecurate Wall Scanner that we recommend for plaster walls. However, magnetic and electronic stud finders generally cannot detect PVC pipes or other plastic objects; for that, you'll generally need a professional device that uses radar to scan within the wall.

Person holding the Mecurate Stud Finder Wall Scanner and taking notes
The Mecurate Stud Finder Wall Scanner has an adjustable scanning depth for different wall types..

The Spruce

It’s not uncommon for a stud finder to trigger an alert, yet the hidden object behind the wall isn’t actually a stud but a pipe, bracket, or some other material. Many stud sensors differentiate between these various types of materials, but the tool is not infallible.

It is possible to get false readings, which is why it can be helpful to continue scanning a wall until you’ve located at least three studs. If the distance between each is equal, and is 16 to 24 inches, you can be confident that you’ve located studs, not some other building material.

How to Use a Stud Finder

Each stud finder's specific operation can be slightly different, but you'll typically need to start by turning it on and checking to make sure the sensors aren't dusty or damaged. When using a stud finder, you can place it on the wall where you plan on hanging your item and slowly move it horizontally across the wall. 

When the stud finder detects the edge of a stud, it will beep, flash, or use a combination of signals to alert you. Radar stud finders may even provide a simulated visual to show what's behind the wall.

For edge stud finders, you will need to mark the edge of the stud with a pencil, then move the stud finder slowly across the wall until you find the other edge. After marking that edge, you can identify the center of the stud since it will be right between the marks.

Some stud finders have multiple sensors, which allow them to identify both edges of the stud at once, or even the center of the stud based on the location of the edges.

Magnetic stud finders are operated the same way, by sliding the device horizontally across the wall, but they sense nails instead of studs, so keep in mind that the mark you make on the wall shows the presence of a nail and not the edge of a stud.

Person reading instructions while holding the Franklin Sensors ProSensor 710 Professional Stud Finder

The Spruce

Why Trust The Spruce?

Michelle Ullman is a home improvement and tool expert who has written for The Spruce since 2014. She has extensive experience not only in writing about all things related to the home but also in carrying out various DIY projects, including landscaping, painting, flooring, wallpapering, furniture makeovers, and simple repairs. For this story, she relied on our testing results to identify the best stud finders, evaluating each for ease of use, reliability, and other factors.

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