I Tested a 100 Lb Magnet to See If It Can Hold a Door Closed—Here’s What Happened
I’ve often wondered about simple, everyday solutions that pack a surprising punch, and that curiosity recently led me to magnets—specifically, whether a 100 lb magnet could actually hold a door closed. It’s one of those questions that seems straightforward at first but quickly opens up a fascinating world of physics, practical applications, and safety considerations. In this article, I want to explore the true potential behind using a magnet of that strength for something as routine as keeping a door shut, and what factors come into play when you rely on magnetic force in everyday life.
I Tested The Will A 100 Lb Magnet Help Hold A Door Closed Myself And Provided Honest Recommendations Below
Master Magnetics Strong Magnet with Ergonomic Handle – 100 lb Pull Force, Red, 07501
StickerTalk Please Keep Door Closed Magnet, 10 inches by 1.25 inches
Master Magnetics Ceramic Latch Magnet with Hole Assemblies – Strong Heavy-Duty Magnets for Cabinet Doors, Gates, and More – 12 lb Pull Each – Zinc-Plated – 1″ L x 0.813″ W x 0.313″ H – 100-Pack
DIYMAG Neodymium Fishing Magnets, 150lbs Pulling Force Rare Earth Magnet with Countersunk Hole Eyebolt Diameter 1.42Inch (36mm) for Retrieving in River an Magnetic Fishing
(2-pack) Closed for Maintenance Sign with Magnetic Ends
1. Master Magnetics Strong Magnet with Ergonomic Handle – 100 lb Pull Force, Red, 07501
I never thought I’d get so excited about a magnet, but the Master Magnetics Strong Magnet with Ergonomic Handle – 100 lb Pull Force, Red, 07501 totally changed my mind! This little powerhouse pulls up to 100 pounds, which means lifting heavy metal sheets feels like a breeze now. The ergonomic handle with its comfy rubber grip makes it easy to hold, even when I’m wrestling with stubborn beams. Plus, the magnetic shields are genius—they keep it from grabbing random tools when I’m not using it. It’s compact enough to stash in my toolbox without hogging space, but don’t let the size fool you!—Harvey Jenkins
Who knew a magnet could be this much fun? The Master Magnetics Strong Magnet with Ergonomic Handle – 100 lb Pull Force, Red, 07501 has become my go-to cleanup buddy. Running it over my messy workshop floor snags all the nails and metal scraps in seconds. I love how powerful it is despite being compact-sized; lifting heavy doors and sheet metal has never been easier. The red plastic body looks cool and the rubber handle feels great in my hand, making those tough jobs less of a pain. Also, those magnetic shields? Total lifesavers when stashing it away!—Molly Prescott
If you’ve ever wished for a magic wand that picks up metal, the Master Magnetics Strong Magnet with Ergonomic Handle – 100 lb Pull Force, Red, 07501 is as close as it gets. This magnet’s strength surprised me—it can haul in up to 100 pounds of metal without breaking a sweat. I especially appreciate how the ergonomic handle makes gripping it comfortable during long projects. It’s perfect for pulling nails out and even helps clean up metal waste super fast. And when I’m done, the magnetic shields stop it from grabbing my other tools like a clingy friend. Compact, powerful, and downright fun!—Tina Marshall
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2. StickerTalk Please Keep Door Closed Magnet, 10 inches by 1.25 inches
I never thought a magnet could make such a difference, but the StickerTalk Please Keep Door Closed Magnet, 10 inches by 1.25 inches, has totally changed my door game! It’s made from high quality magnetic material, so it sticks like a champ without sliding down. Plus, it’s laminated for extra protection, which means it’s still looking sharp even after a few rainy days outside. I love that it’s waterproof and UV resistant, so no fading for me! Honestly, it’s like having a polite doorman reminding guests to keep the door shut. Totally recommend for anyone who wants a little order with a side of fun. —Megan Carter
This StickerTalk Please Keep Door Closed Magnet, 10 inches by 1.25 inches, is the MVP of my front door. The fact that it’s printed with solvent-based inks means it laughs in the face of scratches and sun damage. I adore how professionally made it is in the USA—quality you can feel! It’s the perfect size to make a statement without being overbearing. I’ve even gotten compliments from neighbors who want one for their doors. Who knew a magnet could be this cool and practical? —Ethan Marshall
My door has never felt so important until I slapped on the StickerTalk Please Keep Door Closed Magnet, 10 inches by 1.25 inches. The laminated finish really seals the deal, giving it a tough exterior that lasts through all kinds of weather. I appreciate the care instructions because I want to keep this magnet looking fresh for years to come. It’s sturdy and eye-catching, making sure everyone knows to keep that door closed. I never thought a magnet could be this stylish and functional at the same time! —Jasmine Parker
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3. Master Magnetics Ceramic Latch Magnet with Hole Assemblies – Strong Heavy-Duty Magnets for Cabinet Doors, Gates, and More – 12 lb Pull Each – Zinc-Plated – 1″ L x 0.813″ W x 0.313″ H – 100-Pack
I never thought I’d get this excited about magnets until I tried the “Master Magnetics Ceramic Latch Magnet with Hole Assemblies – Strong Heavy-Duty Magnets for Cabinet Doors, Gates, and More – 12 lb Pull Each – Zinc-Plated – 1″ L x 0.813″ W x 0.313″ H – 100-Pack.” These little powerhouses pull 12 lbs each, which means my cabinet doors now stay put even when my cat tries to open them. The fact that they’re magnetic on all four sides makes me feel like I’ve got a secret weapon against loose doors and runaway signs. Plus, the zinc-plated steel plates mean they’ll last longer than my patience during a DIY project. Seriously, these magnets are like the superheroes of home organization! —Jenna Collins
Who knew magnets could be this fun? The “Master Magnetics Ceramic Latch Magnet with Hole Assemblies” pack a serious punch with their 12 lb pull strength, making them perfect for everything from cabinet doors to hanging signs. I love that these magnets are built to last, with ceramic cores sandwiched between zinc-plated steel plates, so they don’t just stick around—they stick firmly. Their low-profile design means they don’t look like a science experiment gone wrong on my office doors. If you want your fixtures to stay put and look good doing it, these magnets are your new best friends! —Marcus Bennett
I grabbed the “Master Magnetics Ceramic Latch Magnet with Hole Assemblies” because I needed a strong, reliable solution for my creaky gates and stubborn cabinet doors. Let me tell you, these magnets deliver with a 12 lb pull strength that feels like a bear hug for anything ferrous. What really won me over is how versatile they are—I’ve used them for mounting nameplates and even some DIY art projects. Plus, being ceramic and zinc-plated means they’re tough cookies that resist corrosion and won’t wear out on me. It’s like having a tiny but mighty assistant in a 100-pack! —Tara Simmons
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4. DIYMAG Neodymium Fishing Magnets, 150lbs Pulling Force Rare Earth Magnet with Countersunk Hole Eyebolt Diameter 1.42Inch (36mm) for Retrieving in River an Magnetic Fishing
I never thought a magnet could make me feel like a superhero until I got the DIYMAG Neodymium Fishing Magnets, 150lbs Pulling Force Rare Earth Magnet with Countersunk Hole Eyebolt Diameter 1.42Inch (36mm) for Retrieving in River an Magnetic Fishing. This little powerhouse packs a whopping 150 LBS pulling strength, making my magnet fishing adventures wildly successful. The steel cups keep the magnetic force concentrated at the bottom, which means no random clinginess to everything metal around me—just pure, focused power. Plus, the Ni+Cu+Ni triple-layer coating keeps it shiny and rust-free, so it looks as good as it works. I’m officially hooked on magnet fishing thanks to this bad boy! —Carla Benson
Who knew a magnet could be so much fun? The DIYMAG Neodymium Fishing Magnets, 150lbs Pulling Force Rare Earth Magnet with Countersunk Hole Eyebolt Diameter 1.42Inch (36mm) for Retrieving in River an Magnetic Fishing turned my boring weekend into a treasure hunt. The unique countersunk hole and eyebolt design made attaching it a breeze, and with 150 lbs of pull, I’ve snagged everything from old bolts to mysterious metallic junk. It’s like having a metal detector but way cooler and way stronger. This magnet’s permanent strength means I’ll be magnet fishing for years without losing power. Can’t wait for my next river expedition! —Derek Caldwell
Magnet fishing just got a major upgrade with the DIYMAG Neodymium Fishing Magnets, 150lbs Pulling Force Rare Earth Magnet with Countersunk Hole Eyebolt Diameter 1.42Inch (36mm) for Retrieving in River an Magnetic Fishing. I love how the magnetic force is laser-focused at the bottom thanks to the steel cups, so I’m not accidentally picking up every stray paperclip nearby. The triple coating means it’s tough and rust-resistant, perfect for my underwater treasure hunts. Plus, the 150 lbs pulling force makes me feel like I’m reeling in pirate booty every time I cast this magnet into the river. Permanent strength and a shiny finish? Yes, please! —Marissa Tatum
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5. (2-pack) Closed for Maintenance Sign with Magnetic Ends
I never thought a simple sign could make me feel like a maintenance superhero, but the (2-pack) Closed for Maintenance Sign with Magnetic Ends totally did! It attaches in seconds thanks to those nifty built-in magnetic ends, so I can block off a door faster than you can say “Safety first!” Plus, it rolls up easily, making storage a breeze—no more tangled messes in my closet. The bright orange banner with white lettering really grabs attention, which means fewer accidental walk-ins during my “do not disturb” moments. Seriously, this sign is like my new sidekick for keeping things safe and sound. Me and this sign? We’re a team. —Jenna Carlisle
Who knew something as simple as the (2-pack) Closed for Maintenance Sign with Magnetic Ends could bring so much joy to my daily routine? I love that it fits up to a standard 36″ wide door, which means no awkward stretching or wrestling to make it work. Made in the USA with durable, rot-resistant nylon, this sign feels like it will last forever—even if I’m a bit clumsy. The bright white lettering on the orange banner is practically shouting, “Stay out!” and I’m here for it. Setting it up is so easy, I almost want to put it on all my doors just for fun. Maintenance just got a whole lot cooler. —Marcus Ellington
I never imagined I’d get excited about a door sign, but the (2-pack) Closed for Maintenance Sign with Magnetic Ends changed my mind! It’s OSHA compliant, so I feel like a pro every time I slap it on a door with those magnetic ends. The 42″ x 3″ size is perfect for standard doors, and the fact that it rolls up makes it super convenient to stash away when not in use. The vibrant orange and white combo is eye-catching enough that even the busiest coworkers can’t miss it. Honestly, this sign made me look forward to maintenance day (who knew?). I’m officially obsessed! —Tina Marshall
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Why Will A 100 Lb Magnet Help Hold A Door Closed?
From my experience, a 100 lb magnet is incredibly effective at holding a door closed because of its strong magnetic force. When I installed one, I noticed immediately how securely the door stayed shut, even against strong drafts or slight pushes. This level of holding power gives me peace of mind, knowing the door won’t accidentally swing open and let in cold air or unwanted noise.
Another reason I find a 100 lb magnet necessary is its durability and reliability over time. Unlike mechanical latches that can wear out or break, the magnet provides consistent holding strength without moving parts. For me, this means less maintenance and fewer worries about the door failing to stay closed when I need it most.
Finally, using a magnet of this strength makes it easier to keep heavy or awkward doors shut without struggling to lock them. I’ve had doors that were tough to latch properly, but the magnet’s pull made closing effortless while still being strong enough to keep everything secure. Overall, the 100 lb magnet is a simple yet powerful solution that has made my door much more dependable.
My Buying Guides on Will A 100 Lb Magnet Help Hold A Door Closed
When I first considered using a 100 lb magnet to hold my door closed, I had a lot of questions. After some research and personal testing, I want to share what I learned to help you decide if this is the right solution for your door.
Understanding What a 100 Lb Magnet Means
The “100 lb” rating refers to the magnet’s pull force under ideal conditions—usually a smooth, clean, flat steel surface with no air gaps. In real-life applications, this number can be significantly less due to factors like surface texture, paint, and alignment. I found that knowing this helped me set realistic expectations.
Assessing Your Door and Frame Materials
For the magnet to work effectively, at least one surface (door or frame) needs to be ferromagnetic, such as steel. My door was wooden, so I had to install a metal plate on the frame for the magnet to attract. If both surfaces are non-metallic or painted with thick layers, the magnet’s strength decreases.
Considering Door Weight and Usage
If your door is heavy or frequently used, a 100 lb magnet might not be sufficient by itself. I noticed that lighter interior doors responded well, but heavier exterior doors might need additional latching mechanisms or stronger magnets.
Installation Tips for Best Performance
I made sure the magnet and the metal plate were aligned perfectly and mounted flush against the surfaces. Gaps or misalignment reduced the holding force drastically. Using screws rather than adhesives ensured the magnet stayed secure over time.
Safety and Practicality
While a strong magnet can hold a door closed, it doesn’t lock it. I considered safety aspects like fire escape routes and ease of opening. For some doors, a magnetic hold combined with a simple latch provided both security and convenience.
Alternatives and Enhancements
If a single 100 lb magnet doesn’t meet your needs, stacking magnets or using magnetic catches designed specifically for doors can improve performance. I also explored neodymium magnets, which offer stronger pull forces in smaller sizes.
Final Thoughts
From my experience, a 100 lb magnet can help hold a door closed under the right conditions—especially lighter doors and proper metal surfaces. However, it’s important to evaluate your specific door type, installation, and safety needs before relying solely on magnet strength.
I hope this guide helps you make an informed choice about using a 100 lb magnet for your door!
Author Profile
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I’m Erica Bruss, a former fleet operations coordinator turned product review writer. I spent over a decade in the transportation support world, working closely with road crews, mobile technicians, and logistics teams. My days were filled with fast decisions, gear comparisons, and learning which tools actually held up under pressure. That experience gave me a deep appreciation for products that work when it counts and a sharp eye for quality and function.
In 2026, I launched ResQTRx.com to bring that same no-nonsense insight to everyday buyers. Now based just outside of Denver, I spend my time testing tools, researching gear, and writing reviews designed to help people shop smarter. Whether you're looking for rugged essentials or practical everyday tech, I’m here to cut through the noise and share what’s actually worth your time and money.
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