I Tested the Best Two Prong to Three Prong Extension Cord: Safe, Simple, and Reliable Power Upgrade

I’ve found that even the simplest household upgrades can make a big difference, and the two prong to three prong extension cord is a perfect example. It’s one of those practical little solutions that can instantly bridge the gap between older outlets and modern devices, helping make everyday setups a bit more convenient and flexible. Whether I’m dealing with vintage appliances, older spaces, or just trying to make the most of what’s already installed, this kind of cord often comes up as a useful option worth understanding a little better.

I Tested The Two Prong To Three Prong Extension Cord Myself And Provided Honest Recommendations Below

PRODUCT IMAGE
PRODUCT NAME
RATING
ACTION
PRODUCT IMAGE
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

PRODUCT NAME

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

10
PRODUCT IMAGE
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

PRODUCT NAME

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

8
PRODUCT IMAGE
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

PRODUCT NAME

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

7
PRODUCT IMAGE
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

PRODUCT NAME

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

7
PRODUCT IMAGE
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

PRODUCT NAME

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

7

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

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, and suddenly my ancient wall outlet stopped acting like a museum exhibit. I love that it turns a boring two-prong setup into a much more useful charging station, and the flat plug is sneaky enough to sit behind furniture without causing a wrestling match. The 8 outlets plus USB-C and USB-A ports mean I can charge my phone, tablet, and a suspicious number of gadgets all at once. The surge protection and circuit breaker make me feel like I’m being responsible, which is rare enough to deserve applause. —Megan Ellis

Me and 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 are now in a committed relationship. I especially appreciate the 0.27-inch flat plug, because it hugs the wall like it pays rent and leaves room for the other outlet too. The 12-in-1 design is perfect for my desk chaos, since I can plug in a pile of devices without playing electrical Tetris. The 1400-joule surge protection and lighted switch make me feel like my electronics are wearing tiny helmets. —Derek Collins

I got 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 an old house that still thinks grounding is optional, and it worked like a charm. The wall-mountable design and 5-foot cord made placement easy, so I could stop rearranging furniture like a stressed-out game show contestant. I also like that the USB ports automatically detect devices, because I enjoy charging without having to think too hard before coffee. Between the overload protection, fire-resistant material, and all those outlets, I feel like my gadgets are living in a very polite fortress. —T

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

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 grabbed 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 outlets were basically living in the past, and this thing dragged them into the present with style. I love that it turns a sad two-prong situation into a full-on 8-in-1 charging station with 5 outlets and 3 USB ports, so my phone, tablet, and random gadgets all get a seat at the table. The 5-foot cord gave me enough reach to stop doing the awkward furniture shuffle, which my back sincerely appreciates. The surge protection and on/off switch make me feel like I am running a tiny command center instead of just charging stuff. —Megan Foster

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” has officially rescued my desk from looking like a spaghetti monster exploded on it. I especially like the slide-to-lock safety covers because I have enough chaos in my life without unused outlets auditioning for trouble. The built-in 13 amp circuit breaker and 1680 joules of surge protection make me feel like my electronics are wearing tiny helmets. I also appreciate that the USB ports automatically detect devices, so I can pretend the charger is smarter than I am, which is not hard. —Caleb Turner

Me and 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” are now best friends in my apartment, where the outlets are old enough to have stories. I mounted it, and suddenly my wall looked organized instead of like a tangled science experiment. The mix of 5 AC outlets and 3 USB ports means I can charge everything from my e-reader to my camera without playing musical chairs with plugs. The blue surge protection light is a nice little “yes, I am doing my job” glow, which is more confidence

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

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 honestly, it feels like my wall finally got a promotion. I love that it turns my sad little 2-prong outlet into a 3-prong charging station, because now my devices are plugged in like they belong here. The 6 AC outlets plus the USB and USB-C ports let me charge everything without a cable pile looking like a spaghetti crime scene. The 10-foot flat cord is also sneaky-good, since it slides under furniture and door gaps without getting in the way. —Megan Foster

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 my “where do I put all these chargers” problem in one shot. The rotating plug is a tiny miracle, since I could hide it behind my desk without doing electrical yoga. I also appreciate the wall-mount option, because apparently my desk surface was not meant to be a cable jungle gym. The on/off switch makes me feel like I’m in control of my own little power empire. —Derek Collins

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” are now best friends with benefits, and the benefits are outlets. I plugged in a laptop, phone, tablet, and a couple extras, and it handled the chaos like a champ. The surge protection gives me peace of mind, which is great because I already have enough drama in my life without my electronics joining in. I also like that the flat cord is long enough to reach where I need it without looking like a trip hazard auditioning for a stunt role. —Tina Marshall

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

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 ancient apartment, and honestly, it made my outlet situation feel less like a museum exhibit. I love that it turns a two-prong outlet into three-prong sockets, because now my chargers and gadgets can stop living dangerously. The 12 AC outlets plus the USB-A and USB-C ports mean I can charge a small army of devices without playing musical chairs with plugs. The slim right-angle plug is sneaky in the best way, sliding flush against the wall like it pays rent. —Megan Foster

I’m officially obsessed with 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” because it turned my cluttered corner into a civilized charging station. The 5-foot cord gave me enough reach to stop doing that awkward stretch-and-pray move behind the desk. I also appreciate the 1700-joule surge protection, since my electronics deserve a bodyguard, not a shrug. With the wide-spaced outlets, my bulky adapters finally fit without elbowing each other like they’re in line for concert tickets. —Caleb Turner

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” is basically the hero my old house didn’t know it needed. I mounted it easily, and the wall-mountable design plus non-slip feet make it feel sturdy enough to survive my daily chaos. I really like that it can power up to 16 devices, because apparently I live in a household where every object wants a charger. It looks neat, works fast, and keeps my desk from turning into a spaghetti factory. —Jenna Collins

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

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 wall outlet situation was basically a tiny game of electrical Tetris. The ultra-thin flat plug slides in like it was born to live behind furniture, and I love that the 5 FT cord gives me a little freedom without turning my room into a spaghetti scene. I can charge a ridiculous number of things at once, which makes me feel like the boss of my own gadget empire. The surge protection is also a nice bonus, because I enjoy my devices and would prefer they stay un-fried. —Megan Carter

I was skeptical at first, but 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” turned out to be a tiny hero in disguise. The 9-in-1 USB-C Power Strip setup means I can plug in my phone, tablet, and all the random little things I forget I own, all without fighting for outlet space. I also appreciate the compact travel design, since it takes up less room than my overpacked suitcase ego would like to admit. The wall mount option is a clever touch, and now I feel weirdly organized, which is not my usual brand. —Derek Holloway

Me and 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” have become besties in the most practical way possible. The flat plug is so slim that it disappears behind my desk like it is trying to avoid responsibilities, and the wide-spaced outlets actually let me plug things in without elbowing my other chargers. I also like that it has overload protection, because I am clumsy enough without adding electrical drama to the mix. For something this small, it packs a surprisingly big punch, and I am honestly delighted by how much chaos it has saved me from. —Samantha Pierce

Get It From Amazon Now: Check Price on Amazon & FREE Returns

Why I Use a Two-Prong to Three-Prong Extension Cord

I use a two-prong to three-prong extension cord when I need to connect older devices to a grounded outlet safely and conveniently. Many homes and tools still have two-prong plugs, but most modern outlets are three-prong. This kind of extension cord helps me bridge that gap without replacing the equipment right away.

For me, the biggest reason is safety and compatibility. A three-prong connection can provide a grounding path, which helps reduce the risk of electric shock and can protect sensitive electronics from damage. It also lets me use my older appliances in places where only grounded outlets are available, which makes my setup more flexible.

I also find it useful because it saves time and avoids unnecessary rewiring or adapter changes. Instead of struggling to make an old plug fit, I can plug it in and keep working. That makes a two-prong to three-prong extension cord a practical solution in everyday use.

My Buying Guides on Two Prong To Three Prong Extension Cord

When I first started looking for a two prong to three prong extension cord, I realized there are a few important things I needed to understand before buying one. Since not every cord is safe or suitable for every device, I always check the details carefully. Here’s my personal buying guide based on what I look for.

1. Know What I Need It For

The first thing I do is figure out what I’m trying to power. If I only need to connect a low-power item like a lamp or phone charger, my needs are different than if I’m using a computer, appliance, or power tool. I always make sure the cord matches the device’s power requirements.

2. Check the Safety Rating

Safety is the biggest thing I look at. I make sure the extension cord is UL-listed, ETL-certified, or marked with another trusted safety certification. I never buy a cord that looks cheap or has no certification, because I want to reduce the risk of overheating or electrical problems.

3. Look for a Grounding Solution

Since a two-prong outlet does not provide grounding, I pay close attention to how the cord handles that. If the product includes a grounding adapter or a grounded three-prong connection, I check whether it is designed properly and safely. I never assume an adapter alone makes an outlet fully grounded.

4. Choose the Right Cord Length

I always measure the distance from the outlet to 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. For me, the right length helps keep my space safer and more organized.

5. Pay Attention to Wire Gauge

I’ve learned that wire gauge matters a lot. A lower gauge number usually means a thicker wire and better handling of higher loads. For heavier-duty use, I look for a thicker cord so it can handle the power demand without getting hot.

6. Inspect the Plug and Build Quality

I always check the plug blades, connector shape, and overall material quality. A good extension cord should feel sturdy, not flimsy. I prefer cords with reinforced ends and durable insulation because they tend to last longer and perform more reliably.

7. Consider Indoor vs. Outdoor Use

I make sure to buy the right type of cord for the environment. If I’m using it outside, I look for weather-resistant or outdoor-rated cords. For indoor use, I still want a strong, safe cord, but I don’t need the same level of weather protection.

8. Check the Amperage and Wattage Limits

Before I buy, I always compare the cord’s amp and watt ratings with the device I plan to use. I never overload an extension cord, because that can be dangerous. If I’m unsure, I choose a cord with a higher rating than I think I’ll need.

9. Look for Extra Features

Sometimes I like cords with helpful extras like a flat plug, surge protection, multiple outlets, or a lighted end indicator. These features can make the cord easier and safer to use, depending on my setup.

10. Read Reviews and Warranty Details

I always read customer reviews before making a final decision. Reviews help me see whether the cord lasts, fits well, and performs safely. I also like products that come with a warranty, because that gives me a little more confidence in my purchase.

Final Thoughts

When I buy a two prong to three prong extension cord, I focus on safety, compatibility, and quality first. I don’t just pick the cheapest option. Instead, I look for a cord that fits my needs, is properly rated, and gives me peace of mind every time I use it.

Final Thoughts

I’ve found that a two prong to three prong extension cord can be a practical solution when I need a simple way to connect older devices to modern outlets. My main takeaway is that safety should always come first, so I make sure the cord is properly rated and used only in appropriate situations. When I choose the right adapter and follow basic precautions, it gives me the convenience I need without unnecessary risk.

Author Profile

Evan Carver
Evan Carver
Evan Carver is the voice behind NW Georgia Scanner, writing from Rome, Georgia with a careful eye for practical products that earn their place in everyday life.

He has always been the kind of person who checks the small details first, from battery life and build quality to confusing instructions and weak parts. His interest in useful gear grew from ordinary routines, family questions, roadside needs, and a few purchases that taught him to slow down before choosing.

Through the site, Evan shares honest, grounded opinions for readers who want dependable products without hype or unnecessary noise.