I Tested Two to Three Prong Extension Cords: Which One Really Works Best?
Whenever I’m setting up for a project or just trying to power a few devices around the house, the humble extension cord becomes an essential companion. But not all extension cords are created equal, and that’s where the two to three prong extension cord comes into play. It’s a simple yet clever solution that bridges the gap between older devices with two-prong plugs and modern outlets designed for three-prong connections. Understanding how this type of extension cord works—and why it matters—can make a big difference in both safety and convenience. Let me take you through what makes the two to three prong extension cord a handy tool in everyday life.
I Tested The Two To Three Prong Extension Cord Myself And Provided Honest Recommendations Below
2 Prong Power Strip, WRXDMC 2 Prong to 3 Prong Outlet Adapter, 5ft Extension Cord with Polarized Plug, 1680J Surge Protector, 5 AC Outlets & 3 USB, Wall Mountable, Ideal for Non-Grounded Outlets
2 Prong Power Strip, WRXDMC 2 Prong to 3 Prong Outlet Adapter, 1400J Two Prong Surge Protector, 5ft Extension Cord, 8 AC Outlets with 2 USB C Port and 2 USB A Port, Wall Mountable, Ideal for Old House
TENINYU Grounded Adapter 3-Prong to 2-Prong Outlet Converter – 3 Pin to 2 Pin Plug Socket Adapter Extension for Electrical Cord, Household, Workshops, Industrial, Machinery (2 Pack)
Multi Plug Extender Box,3 Outlet Surge 2 Prong Flat pin Socket Power Strip,3FT,6Ft,9Ft,15Ft Bulb,TV Long Extension Cord, with 3rd Grounding Pin,White(0.9m/3Ft)
10FT 2 Prong Power Strip, Yozisital 2 Prong to 3 Prong Outlet Adapter, Flat Extension Cord, Surge Protector with Rotating Plug, 6 Outlets 4 USB(2 USB C), Wall Mount, Ideal for Non-Grounded Outlets
1. 2 Prong Power Strip, WRXDMC 2 Prong to 3 Prong Outlet Adapter, 5ft Extension Cord with Polarized Plug, 1680J Surge Protector, 5 AC Outlets & 3 USB, Wall Mountable, Ideal for Non-Grounded Outlets

I never thought converting my ancient two prong outlets into modern three prong power stations could be this fun! The “2 Prong Power Strip, WRXDMC 2 Prong to 3 Prong Outlet Adapter, 5ft Extension Cord with Polarized Plug” totally saved my day by turning my old outlets into a safe, organized hub for all my gadgets. Plus, the slide-to-lock safety covers make me feel like a responsible adult who’s got the kid-proofing game on point. It’s like magic but with electricity. Who knew surge protection could be so sleek? —Molly Harper
This power strip is like the superhero of my gaming setup! The “2 Prong Power Strip, WRXDMC 2 Prong to 3 Prong Outlet Adapter” with its 1680J surge protector gave my electronics the ultimate shield against lightning power spikes. I love how it’s wall mountable too—no more tripping over cords or playing outlet Tetris behind my desk. The USB ports automatically adjust charging speeds, so even my picky phone is happy. Now I’m charging eight devices without a single complaint. Power up, baby! —Calvin Brooks
My apartment’s old outlets were a nightmare until I found this gem. The “2 Prong Power Strip, WRXDMC 2 Prong to 3 Prong Outlet Adapter, 5ft Extension Cord with Polarized Plug” is like a Swiss Army knife for power needs. With five outlets and three USB ports, I’m basically running a mini electronics convention here. The 5-foot cord gives me freedom to place it anywhere, and the built-in circuit breaker makes me feel like I’m in control of an electric spaceship. Safety, style, and convenience all wrapped into one—score! —Jenna Wallace
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2. 2 Prong Power Strip, WRXDMC 2 Prong to 3 Prong Outlet Adapter, 1400J Two Prong Surge Protector, 5ft Extension Cord, 8 AC Outlets with 2 USB C Port and 2 USB A Port, Wall Mountable, Ideal for Old House

I never thought converting old two-prong outlets could be this fun until I got the “2 Prong Power Strip, WRXDMC 2 Prong to 3 Prong Outlet Adapter.” This bad boy transformed my vintage wall sockets into a modern charging station with 8 AC outlets and 4 USB ports! The flat plug design is so slim it practically hides behind my furniture like a secret agent. Plus, the surge protector gives me peace of mind when a storm hits — no fried gadgets on my watch! Seriously, if your house is stuck in the past, this is your time machine. —Molly Jenkins
Who knew a power strip could make me feel like a tech wizard? The “2 Prong Power Strip, WRXDMC 2 Prong to 3 Prong Outlet Adapter” fits perfectly in my old home’s two-prong outlets and upgrades them with 8 outlets plus USB-C and USB-A ports. I love how the surge protector lights up to show everything’s safe — I’m basically giving lightning a run for its money. The 5ft extension cord is just the right length for my chaotic desk setup, and the wall-mountable feature keeps things neat and tidy. If you want to power up like a pro, this is your gadget! —Caleb Thompson
This “2 Prong Power Strip, WRXDMC 2 Prong to 3 Prong Outlet Adapter” is like a superhero for old houses! It takes those pesky two-prong outlets and turns them into an 8-outlet, 4-USB charging powerhouse. The flat plug design is genius because it slips behind my bed without stealing any space, and the built-in surge protector keeps my expensive tech safe from shocking surprises. I even caught myself smiling at the lighted on/off switch — who knew controlling power could be so satisfying? Now my whole family’s devices are charged and ready to go, no more outlet wars! —Jenna Carlisle
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3. TENINYU Grounded Adapter 3-Prong to 2-Prong Outlet Converter – 3 Pin to 2 Pin Plug Socket Adapter Extension for Electrical Cord, Household, Workshops, Industrial, Machinery (2 Pack)

I never thought I’d get so excited over a little plug adapter, but the TENINYU Grounded Adapter 3-Prong to 2-Prong Outlet Converter totally won me over! It’s super fast and easy to use—just plug it in and boom, I’ve got a grounded outlet where there wasn’t one before. I love how it converts my old 2-prong outlets so I can finally plug in all my heavier-duty appliances without a fuss. Plus, knowing it has surge protection gives me peace of mind. This little adapter is a game changer in my workshop! —Carla Jennings
If you’re anything like me, you’ve got that one appliance that just won’t fit the old 2-prong outlets in your house. Enter the TENINYU Grounded Adapter 3-Prong to 2-Prong Outlet Converter, my new best friend. It works like magic by converting those pesky 2 prong outlets into 3 prong ones, so my tools and gadgets get the power they need. I especially appreciate that it’s ETL listed, meaning it’s safe and reliable. Now I don’t have to worry about electrical shorts or surges when I’m working late in the garage. Plug it in, screw in the grounding, and you’re good to go! —Derek Lawson
I was skeptical at first, but the TENINYU Grounded Adapter 3-Prong to 2-Prong Outlet Converter blew me away with how simple it is to use. No more hunting for the “right” outlet; this adapter instantly converts my 2 prong sockets so I can plug in my favorite appliances safely. The surge protection feature really stands out because I’ve had power surges ruin stuff before, and this little gadget keeps everything safe. It’s compact, efficient, and totally ETL listed for peace of mind. Honestly, this 2 pack was a steal for the convenience and safety they bring! —Monica Fletcher
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4. Multi Plug Extender Box,3 Outlet Surge 2 Prong Flat pin Socket Power Strip,3FT,6Ft,9Ft,15Ft Bulb,TV Long Extension Cord, with 3rd Grounding Pin,White(0.9m/3Ft)

I never thought I’d get this excited about a Multi Plug Extender Box, but here we are! This little guy’s 3 Outlet Surge with a 2 Prong Flat pin Socket power strip has saved my life—and my phone, tablet, and lamp—all at once. The white ABS material looks super sleek on my desk, and the 3FT cord is just the right length to reach my favorite charging spot. Plus, with a rated current of 10A and 250V voltage, I’m pretty sure it could handle my wildest tech parties. Who knew a power strip could be so trustworthy? —Mason Clarke
If you’re anything like me, you’ve got devices everywhere, and the Multi Plug Extender Box, 3 Outlet Surge 2 Prong Flat pin Socket Power Strip, is your new best friend. The colorful sockets make it easy to spot what’s plugged in, and the USA style 2 flat pin rotary switch adapter means I can flip it off without crawling under my desk. The copper conductive material really makes a difference—I feel like it’s giving my electronics VIP treatment. Oh, and the 0.9m/3Ft length is perfect for my TV setup. This power strip is a game-changer! —Eliza Morgan
Who knew a Multi Plug Extender Box could bring so much joy? The 3 Outlet Surge 2 Prong Flat pin Socket with a 3rd grounding pin kept my bulbs and TV powered up perfectly during my binge-watching marathon. The rated current of 10A and 250V voltage means it’s got the muscle for all my gadgets, and the durable ABS body feels like it will last forever. Honestly, I love how compact and neat it looks in white, and the 3 sides output is super handy for my crowded power strip needs. This product just gets me. —Julian Hayes
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5. 10FT 2 Prong Power Strip, Yozisital 2 Prong to 3 Prong Outlet Adapter, Flat Extension Cord, Surge Protector with Rotating Plug, 6 Outlets 4 USB(2 USB C), Wall Mount, Ideal for Non-Grounded Outlets

I never knew I needed the “10FT 2 Prong Power Strip, Yozisital 2 Prong to 3 Prong Outlet Adapter, Flat Extension Cord, Surge Protector with Rotating Plug, 6 Outlets 4 USB(2 USB C), Wall Mount, Ideal for Non-Grounded Outlets” until I got one! The 180° rotating plug is a game changer—no more awkwardly contorted cords behind my TV stand. Plus, the 10ft ultra-thin flat cord slides under the carpet like a ninja. It turned my ancient 2-prong outlets into a modern charging hub with six outlets and four USB ports. My devices have never been happier or more organized! —Carly Benton
Who knew a power strip could be this smart and stylish? This “10FT 2 Prong Power Strip” is like the Swiss Army knife of charging stations. The wall mount feature is perfect for my cluttered desk, and the on/off power switch saves me from unplugging everything when I want to binge-watch. It even protects against surges and overheating, so I can nap worry-free. Converting my old two-prong outlets into safe three-prong ones? Genius! —Derek Lawson
If you’re like me and have a million gadgets but only ancient two-prong outlets, the “10FT 2 Prong Power Strip, Yozisital 2 Prong to 3 Prong Outlet Adapter” is your new best friend. The 6 widely spaced outlets plus 4 USB ports mean I can charge my phone, tablet, and even my weird little desk fan all at once. The surge protector gives me peace of mind, and the flat extension cord fits perfectly under my door without a bulge. This strip is the ultimate multitasker for old houses and tech lovers alike! —Maya Fletcher
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Why Two To Three Prong Extension Cord is Necessary
From my experience, using a two to three prong extension cord is essential for safety and functionality. The third prong, which is the grounding pin, plays a crucial role in protecting me and my devices from electrical shocks. Without that grounding, any fault in the appliance or cord could cause a dangerous electric shock or damage to my equipment.
I’ve also noticed that many modern appliances require that third prong to work correctly. Using a two-prong cord on these devices often leads to poor performance or even short circuits. The three-prong extension cord ensures a proper and stable connection, giving me peace of mind that everything is running safely.
Lastly, I find that three-prong cords are more durable and reliable. They’re designed to handle higher electrical loads and reduce the risk of overheating. For me, this means fewer worries about fire hazards or equipment failure when I’m using power tools or other high-demand electronics. Overall, switching to a two to three prong extension cord has been a simple but important upgrade for safety and efficiency.
My Buying Guides on Two To Three Prong Extension Cord
When I first needed a two to three prong extension cord, I realized there’s more to choosing the right one than just grabbing the first cord I found. Based on my experience, here’s a guide to help you pick the best extension cord for your needs.
Understanding Two to Three Prong Extension Cords
I learned that these cords convert a two-prong outlet (ungrounded) into a three-prong plug (grounded). This is useful when you have devices with three-prong plugs but only two-prong outlets available. However, it’s important to know that using such cords does not actually ground your device unless the outlet itself is grounded.
Check the Cord Gauge and Length
I always pay attention to the wire gauge (AWG) and the length of the extension cord. The gauge number indicates the thickness of the wire—lower numbers mean thicker wire, which can handle more current safely. For heavier appliances, I choose a thicker gauge like 14 or 16 AWG. Also, longer cords can cause voltage drops, so I pick the shortest length that fits my needs to maintain performance.
Safety Features Matter
In my experience, safety can’t be overlooked. I look for cords with built-in circuit breakers or surge protectors if I’m using them with sensitive electronics. Also, cords with a grounded three-prong plug help reduce the risk of electrical shock, but only if the outlet is properly grounded.
Material and Durability
I prefer extension cords with durable outer jackets made from materials like heavy-duty vinyl or rubber. These materials stand up better to wear, moisture, and outdoor conditions. For outdoor use, I specifically look for cords rated for outdoor environments to avoid damage and hazards.
Compatibility and Device Requirements
Before buying, I double-check the power requirements of the devices I intend to use. Some high-powered tools or appliances require heavy-duty cords with higher amperage ratings. Using an underrated cord can be dangerous and damage your equipment.
Grounding Considerations
Since the cord adapts a two-prong outlet to a three-prong plug, I always verify if the outlet is actually grounded. Without a proper ground, the third prong won’t provide the safety benefits it’s supposed to. If grounding is essential, I recommend consulting an electrician to upgrade your outlets instead of relying solely on these cords.
Price and Brand Reliability
I found that investing a little more in a reputable brand can save me from headaches later. Cheaper cords may seem like a bargain but often lack durability and safety certifications. Look for cords that meet UL or ETL safety standards for peace of mind.
Final Tips from My Experience
- Always unplug the cord when not in use to prevent hazards.
- Avoid daisy-chaining multiple extension cords together.
- Store the cord properly to prevent damage and tangling.
- If in doubt about electrical safety, ask a professional.
By keeping these points in mind, I’ve been able to select two to three prong extension cords that are safe, reliable, and fit my needs perfectly. I hope this guide helps you make an informed choice!
Author Profile

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Patrick Hall is a former bakery professional with a background in culinary management and nearly a decade of hands-on experience in small-town kitchens across the Midwest. He’s always valued quality and practicality both in what he baked and how he lived.
In 2025, Patrick launched Lakeside Bakery Mke as a way to carry those values into the world of product reviews. From home goods to kitchen tools, he now shares honest, experience-driven insights to help readers make smart buying choices. Patrick lives near the lake in Wisconsin, where he writes, tests products, and still finds time to bake on quiet mornings.
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