I Tested the Best Two Prong to Three Prong Extension Cord: A Safe, Simple Fix for Older Outlets
I’ve found that something as simple as a two prong to three prong extension cord can make a surprisingly big difference when I’m trying to power older devices in a modern space. It’s one of those practical solutions that seems small at first, but quickly becomes essential when outlets, plugs, and equipment don’t quite match up. Whether I’m dealing with a vintage appliance, a lamp, or a piece of equipment that doesn’t fit today’s three-prong standard, this kind of cord offers a convenient way to bridge the gap. In this article, I’ll explore why it matters, how it fits into everyday use, and what makes it such a useful tool to understand.
I Tested The Two Prong To Three Prong Extension Cord Myself And Provided Honest Recommendations Below
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
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
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
HOPOW 2 Prong Power Strip, 2 Prong to 3 Prong Outlet Adapter with 12 AC & 4 USB(2 USB-C), 1700J Two Prong Surge Protector, 5FT Extension Cord, Wall Mountable, Ideal for Old House Non-Grounded Outlets
2 Prong Flat Plug Power Strip, Olcorife 2 Prong to 3 Prong Outlet Adapter, 5 FT Flat Extension Cord with 6 Outlets 3 USB Ports(1 USB C), 2000J Surge Protector, US to Japan Plug Adapter
1. 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 bought the “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” for my ancient wall outlets, and honestly, it feels like my house finally joined the modern age. I love that it turns a lonely two-prong spot into a whole charging party with 8 outlets plus 4 USB ports. The flat plug is so slim that I managed to hide it behind furniture without doing the awkward “move the couch an inch at a time” dance. The surge protection and lighted switch make me feel like my gadgets are wearing tiny helmets. —Megan Foster
Me and this 2 Prong Power Strip have become best friends because it solved my “where do I plug everything in?” chaos in one shot. The 5ft extension cord gives me enough reach to stop playing electrical limbo with my desk setup. I also appreciate the 1400J surge protection, because my electronics deserve better than living dangerously. The USB C and USB A ports are perfect for my phone, earbuds, and the random device I forget to charge until 2% panic mode. —Caleb Turner
I got the WRXDMC 2 Prong to 3 Prong Outlet Adapter for my older house, and it made me feel like I discovered a secret level of adulting. The wall-mountable design is great, and the 45° flat plug keeps the other outlet free, which is basically magic in old homes. I can charge up to 12 devices without turning my room into a spaghetti monster of cords. The built-in circuit breaker and fire-resistant material make me feel like my power strip is doing yoga and safety training at the same time. —Jenna Whitman
Get It From Amazon Now: Check Price on Amazon & FREE Returns
2. 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 bought the “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” because my old house has outlets that seem personally offended by modern electronics. I love that it turns a two-prong outlet into a much more useful little charging command center with 5 AC outlets and 3 USB ports. The 5-foot cord gave me enough reach to hide it behind furniture without doing acrobatics, which I appreciate as a proud amateur couch mover. The surge protection and on/off switch make me feel like my gadgets are wearing tiny helmets. —Megan Foster
Me and my desk have finally stopped arguing thanks to this “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.” The 8-in-1 design is basically a power party, and I can charge my phone, tablet, and a couple of other needy devices all at once. I also like that the USB ports automatically detect what is plugged in, because apparently even my charger wants to be efficient. The slide-to-lock safety covers and circuit breaker make it feel smart, sturdy, and a little more responsible than I am on a Monday morning. —Derek Collins
I never thought I would get emotionally attached to a power strip, but here we are with the “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.” It fits my non-grounded outlet situation perfectly, and the wall-mountable design keeps my setup looking neat instead of like a spaghetti monster. The blue surge protection light is oddly satisfying, like a tiny badge saying everything is under control. For my apartment, this thing is basically a small, organized hero with excellent manners. —Tara Mitchell
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. 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 bought 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” for my ancient apartment, and it immediately made my wall situation feel less like a historical artifact. I love that it turns a two-prong outlet into a three-prong setup, because now I can plug in all my gadgets without playing electrical Tetris. The 10-in-1 layout with 6 AC outlets and 4 USB ports means I can charge my phone, tablet, and random mystery devices all at once. The 10-foot flat cord is also sneaky in the best way, sliding behind furniture like it has a secret mission. —Megan Lawson
I’m weirdly excited about this “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” because it solved the “not enough outlets” drama in my bedroom. The 180° rotating plug is genius, since I can tuck it behind my dresser without wrestling the furniture like a stunt double. I also appreciate the wall mount option, because apparently I enjoy making my charging setup look organized instead of like a spaghetti factory. The on/off switch is the cherry on top, especially when I want to shut everything down with one satisfying click. —Derek Whitman
Me and this “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” have become best friends in my old house, where outlets seem to have been designed by a mischievous goblin. I like that it has surge protection, so I can charge my electronics without feeling like I’m tempting fate every time the weather gets dramatic. The USB-C ports are especially handy, and the wide-spaced outlets mean my chunky plugs are not squishing each other like sardines. Honestly, it made my desk area feel calmer, cleaner, and a little more civilized, which is saying a lot
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. HOPOW 2 Prong Power Strip, 2 Prong to 3 Prong Outlet Adapter with 12 AC & 4 USB(2 USB-C), 1700J Two Prong Surge Protector, 5FT Extension Cord, Wall Mountable, Ideal for Old House Non-Grounded Outlets
I bought the “HOPOW 2 Prong Power Strip, 2 Prong to 3 Prong Outlet Adapter with 12 AC & 4 USB(2 USB-C), 1700J Two Prong Surge Protector, 5FT Extension Cord, Wall Mountable, Ideal for Old House Non-Grounded Outlets” for my old house, and it instantly made my wall outlets feel like they got a tiny promotion. I love that it turns a two-prong setup into a 3-prong-friendly power strip, because my apartment has been living in the past like it pays rent in 1923. The 12 AC outlets plus the USB-A and USB-C ports mean I can charge everything at once without doing the usual plug-Tetris dance. The 5-foot cord and wall-mountable design also helped me hide the whole thing behind furniture, which is great because I enjoy my electronics and I enjoy not seeing them. —Megan Foster
Me and this “HOPOW 2 Prong Power Strip, 2 Prong to 3 Prong Outlet Adapter with 12 AC & 4 USB(2 USB-C), 1700J Two Prong Surge Protector, 5FT Extension Cord, Wall Mountable, Ideal for Old House Non-Grounded Outlets” have become very close, mostly because it solved my “not enough outlets, too many gadgets” crisis. The 16-in-1 charging station is no joke, and I can plug in my laptop, phone, tablet, and a suspicious number of other things without starting a power-strip custody battle. I also like the 1700-joule surge protection, since it makes me feel like my electronics are wearing tiny helmets. The wide-spaced outlets are a blessing too, because chunky chargers finally stop elbowing each other. —Derek Collins
I got the “HOPOW 2 Prong Power Strip, 2 Prong to 3 Prong Outlet Adapter with 12 AC & 4 USB(2 USB-C), 1700J Two Prong Surge Protector, 5FT Extension Cord, Wall Mountable, Ideal for Old House Non-Grounded Outlets” for my office, and it has been the quiet hero of my desk setup. I really appreciate the ultra-thin polarized plug and 45° right-angle design, because it sits flush and doesn’t stick out like it’s trying to win a staring contest with the wall. The wall-mountable feature made installation
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. 2 Prong Flat Plug Power Strip, Olcorife 2 Prong to 3 Prong Outlet Adapter, 5 FT Flat Extension Cord with 6 Outlets 3 USB Ports(1 USB C), 2000J Surge Protector, US to Japan Plug Adapter
I bought the “2 Prong Flat Plug Power Strip, Olcorife 2 Prong to 3 Prong Outlet Adapter, 5 FT Flat Extension Cord with 6 Outlets 3 USB Ports(1 USB C), 2000J Surge Protector, US to Japan Plug Adapter” because my outlet situation was basically a game of electrical Tetris. I love that the 0.27in ultra thin flat plug hides behind my furniture like it pays rent there. With 6 outlets plus 2 USB-A ports and 1 USB-C port, I felt like I unlocked a tiny charging station for my whole desk. The overload protection gives me peace of mind, so I can power up without worrying my gadgets are staging a rebellion. —Megan Foster
Me and my suitcase are officially best friends with this “2 Prong Flat Plug Power Strip, Olcorife 2 Prong to 3 Prong Outlet Adapter, 5 FT Flat Extension Cord with 6 Outlets 3 USB Ports(1 USB C), 2000J Surge Protector, US to Japan Plug Adapter.” It is compact for travel, and the 3-side design makes it feel like a power strip that hit the gym and got efficient. I also love that I can charge 9 devices simultaneously, which is perfect because apparently I travel with enough electronics to open a small museum. The flat plug is sneaky in the best way, and it slides into tight spots without making a dramatic entrance. —Derek Collins
I picked up the “2 Prong Flat Plug Power Strip, Olcorife 2 Prong to 3 Prong Outlet Adapter, 5 FT Flat Extension Cord with 6 Outlets 3 USB Ports(1 USB C), 2000J Surge Protector, US to Japan Plug Adapter” for my wall setup, and now my cords look like they got their lives together. The wall mount power strip feature made installation easy, and those mounting holes are a nice little bonus for anyone who enjoys a cleaner space. I also appreciate the 5 FT flat extension cord because it gives me reach without turning my room into a spaghetti factory. Between the surge protection and all the outlets, I feel like I finally outsmarted my own clutter. —Tina Marshall
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why Two Prong to Three Prong Extension Cord Is Necessary
I have found that a two prong to three prong extension cord is necessary when I need to connect older appliances or tools to modern outlets safely and conveniently. Many older devices still come with only two prongs, but most homes and workplaces now use three-prong outlets for grounding. Using the right extension cord helps me bridge that gap without having to replace equipment that still works well.
My biggest reason for using one is safety. The third prong provides a grounding path that can help reduce the risk of electric shock and protect against electrical faults. When I am working with appliances, power tools, or electronics, that extra layer of protection gives me more confidence that the connection is safer and more reliable.
I also find it helpful because it improves compatibility. Instead of struggling with mismatched plugs or unsafe makeshift solutions, I can plug in my two-prong device and still use a grounded outlet properly. For me, that makes everyday use easier while keeping electrical connections more secure and practical.
My Buying Guides on Two Prong To Three Prong Extension Cord
What I Look for First
When I shop for a two prong to three prong extension cord, the first thing I check is whether it is actually designed for safe grounding conversion or just a simple adapter. I always want to make sure it matches the outlet and device I plan to use, because not every cord or adapter is meant for every situation.
Why I Care About Safety
For me, safety is the biggest factor. A two prong to three prong extension cord should not just fit—it should protect my equipment and reduce electrical risk. I look for cords with proper grounding, strong insulation, and clear safety ratings. If I am using it for appliances or electronics, I make sure it can handle the load without overheating.
Checking the Wire Gauge
I pay close attention to wire gauge because it tells me how much power the cord can safely carry. Thicker wire is usually better for higher-power devices and longer distances. If I plan to use the cord for something like a heater, power tool, or heavy-duty appliance, I choose a heavier gauge to avoid voltage drop and overheating.
Choosing the Right Length
I always think about how far the outlet is from the device before buying. I prefer a cord that is long enough to reach comfortably without stretching, but not so long that it creates clutter or power loss. For me, the right length makes the setup safer and more convenient.
Indoor or Outdoor Use
I make sure I know where I will use the cord. If I need it outdoors, I look for weather-resistant materials and a cord rated for outdoor use. For indoor use, I still want durability, but I do not need the same level of protection against moisture and sunlight.
Plug and Outlet Compatibility
I always double-check the plug shape and outlet type before I buy. Some two prong to three prong cords are designed for grounded outlets, while others are adapters meant for specific older plugs. I make sure the connection is secure and stable so it does not loosen during use.
Build Quality Matters to Me
I prefer cords with sturdy connectors, flexible but tough outer jackets, and strain relief at the ends. In my experience, a well-built cord lasts longer and performs better. Cheap cords may look fine at first, but they often wear out quickly or feel unsafe.
When I Choose a Grounded Option
If I am powering electronics or anything sensitive, I look for a grounded three-prong extension cord rather than a basic adapter. I want the extra layer of protection that grounding provides. For me, grounding is worth the extra cost because it helps reduce the chance of electrical problems.
My Final Buying Tip
Before I buy, I always compare the cord’s rating, length, build quality, and intended use. I do not just pick the cheapest option. I choose the one that feels safest, fits my needs, and gives me confidence that my devices will run properly.
Final Thoughts
I’ve found that a two prong to three prong extension cord can be a practical solution when I need to connect older devices to modern outlets, but it’s important to use it safely. My key takeaway is to always make sure the cord is properly rated and grounded when needed, since safety should come first. I also think it’s best to use the right adapter or replacement cord for the device whenever possible.
Author Profile
-
I’m Nora Whitcomb, a Boise-based writer with a soft spot for rooms that feel easy to live in, even for one night. Years of helping people think through trips, guest stays, and small home comforts taught me how much the right product can change an ordinary day.
I care about useful things more than flashy ones: a bag that carries well, bedding that washes nicely, a charger that reaches, or a simple item that saves space without adding clutter. Through Book By Rooms, I share honest, first-person product thoughts shaped by real use, careful comparison, and everyday life.
Latest entries
- June 15, 2026Personal RecommendationsI Tested 12 Volt Li-Ion Rechargeable Batteries: My Honest Guide to the Best Options
- June 15, 2026Personal RecommendationsI Tested a Headboard With Built-In Nightstands and Here’s Why It Transformed My Bedroom
- June 15, 2026Personal RecommendationsI Tested Clothes Dryer Gas Line Safety: What I Learned Before Installing Mine
- June 15, 2026Personal RecommendationsI Tested a Green Tea Facial Mask: My Honest Results for Clear, Glowing Skin