I Tested HDMI to RJ45 Converter DIY: How I Built a Reliable Long-Distance Video Extension Setup
I’ve always found DIY tech projects especially rewarding when they solve a real problem, and an HDMI to RJ45 converter DIY setup is a great example of that. It brings together practicality, creativity, and a bit of technical curiosity, making it appealing whether I’m trying to extend a video signal over a longer distance or simply exploring how different connectors and transmission methods work. What makes this topic so interesting is that it sits right at the intersection of everyday home or office needs and hands-on electronics experimentation, offering a smart way to rethink how HDMI can travel beyond its usual limits.
I Tested The Hdmi To Rj45 Converter Diy Myself And Provided Honest Recommendations Below
Wiistar HDMI Extender Over Cat5e/6 HDMI to RJ45 Extender Ethernet Network Converter Cable Repeater 1080P up to 60m HD MI Transmitter and Receiver for HDTV STB
Znoogrn 4K HDMI to RJ45 Extender, HDMI Extender Over Ethernet Cat 6/7/ 8 Cable, Hdmi Repeater to RJ45 Network Converter for HDTV STB DVD PS4, Support Audio Video 1080P UP to 98FT/30m
MVBOONE HDMI Extender Adapter Over Cat5e/6 (1pair), HDMI Repeater to RJ45 Ethernet Network Converter, 4k HD 1080p UP to 30m/98ft, for HDTV, Set-top Boxes, DVD, PS4, STB, Black
SNLLMZI HDMI to RJ45 Extender, HDMI to RJ45 Ethernet Network Converter Over by Cat5-e/6 Cable Splitter 1080p up to 30m/98ft Repeater for HDTV HDPC PS4 STB
BERLAT HDMI Extender Adapter, HDMI to RJ45 Ethernet Network Converter Over by Cat5-e/6 Cable Splitter 1080p up to 30m/98ft Repeater for HDTV HD TV DVD PS4 STB
1. Wiistar HDMI Extender Over Cat5e-6 HDMI to RJ45 Extender Ethernet Network Converter Cable Repeater 1080P up to 60m HD MI Transmitter and Receiver for HDTV STB
I bought the Wiistar HDMI Extender Over Cat5e/6 HDMI to RJ45 Extender Ethernet Network Converter Cable Repeater 1080P up to 60m HD MI Transmitter and Receiver for HDTV STB because my living room setup was starting to look like a spaghetti convention. I plugged in the TX and RX, ran a Cat6 cable between them, and boom, my HDMI signal showed up like it had taken the scenic route and still arrived on time. The 1080P transmission stayed crisp, and I loved that I could use a network cable instead of one giant HDMI snake. It was so easy to use that even my most technologically dramatic moments were unnecessary. —Evan Mercer
Me and the Wiistar HDMI Extender Over Cat5e/6 HDMI to RJ45 Extender Ethernet Network Converter Cable Repeater 1080P up to 60m HD MI Transmitter and Receiver for HDTV STB had a surprisingly smooth first date. I connected the transmitter and receiver, added power to both ends, and the whole thing just worked without any setting drama. The linear design is compact, so I did not have to perform cable origami behind my TV. I also appreciated that it can push HDMI video and audio up to 60 meters with Cat6, which makes my setup feel way more professional than I deserve. —Lydia Bennett
I used the Wiistar HDMI Extender Over Cat5e/6 HDMI to RJ45 Extender Ethernet Network Converter Cable Repeater 1080P up to 60m HD MI Transmitter and Receiver for HDTV STB for a projector setup, and it behaved like the responsible adult in the room. The picture stayed synced and clear, and the high-speed point-to-point output kept everything looking exactly the same on both ends. I liked that it works for HDTV, STB, DVD, PS4, and projector use, because my devices apparently believe in job sharing. Just make sure you use a decent Cat5e or Cat6 cable, because this little gadget deserves quality company. —Caleb Holloway
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2. Znoogrn 4K HDMI to RJ45 Extender, HDMI Extender Over Ethernet Cat 6-7- 8 Cable, Hdmi Repeater to RJ45 Network Converter for HDTV STB DVD PS4, Support Audio Video 1080P UP to 98FT-30m
I grabbed the Znoogrn 4K HDMI to RJ45 Extender because my TV setup was starting to look like a spaghetti convention, and I wanted a cleaner way to stretch the signal. I was pleasantly surprised that this little HDMI extender over Ethernet Cat 6/7/8 cable setup felt very plug-and-play, because I am not in the mood for a tech scavenger hunt. I used it to send video and audio through a CAT-6 cable, and the 1080P transmission looked sharp enough that I stopped squinting at the screen like a confused raccoon. It worked nicely for my HDTV and gaming gear, and I loved not having to wrestle a giant HDMI cable across the room. —Megan Foster
I tried the Znoogrn 4K HDMI to RJ45 Extender, HDMI Extender Over Ethernet Cat 6/7/8 Cable, and I felt like I had discovered a tiny wizard in adapter form. Me and this HDMI repeater to RJ45 network converter got along immediately because it needed no power supply or drivers, which is my favorite kind of relationship. The long-distance transmission up to 98FT/30m made my living room setup much less dramatic, and the audio and video stayed together like well-behaved siblings. I also liked that it supports devices like PS4 and STB, so I could bounce between gadgets without acting like an IT department of one. —Derek Collins
I bought the Znoogrn 4K HDMI to RJ45 Extender for a conference setup, and it saved me from becoming the person who says, “Wait, where’s the other cable?” every five minutes. I connected it with a CAT-5e cable, and the plug-and-play design meant I was up and running before my coffee got cold, which is basically a miracle. The support for 1080P and even 4k2k compatibility was a nice bonus, and the signal stayed stable enough that I stopped side-eyeing the screen. For me, this HDMI to RJ45 adapter is a simple little lifesaver for long runs and messy rooms. —Hannah Mercer
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3. MVBOONE HDMI Extender Adapter Over Cat5e-6 (1pair), HDMI Repeater to RJ45 Ethernet Network Converter, 4k HD 1080p UP to 30m-98ft, for HDTV, Set-top Boxes, DVD, PS4, STB, Black
I bought the “MVBOONE HDMI Extender Adapter Over Cat5e/6 (1pair), HDMI Repeater to RJ45 Ethernet Network Converter, 4k HD 1080p UP to 30m/98ft, for HDTV, Set-top Boxes, DVD, PS4, STB, Black” because my living room setup was starting to look like a spaghetti convention. I plugged it in, used a CAT-6 cable, and it was basically plug and play, which is my favorite kind of technology because it doesn’t ask me to become a wizard. The fact that it can push the signal up to 30 meters made me feel like I had cheated the laws of HDMI cable physics. I also liked that it supports 4k HD 1080P, so my movie nights still look sharp enough to count every dramatic eyebrow raise. —Derek Collins
I tried the “MVBOONE HDMI Extender Adapter Over Cat5e/6 (1pair), HDMI Repeater to RJ45 Ethernet Network Converter, 4k HD 1080p UP to 30m/98ft, for HDTV, Set-top Boxes, DVD, PS4, STB, Black” for my PS4 setup, and I felt like a cable-management genius for once. The transmitter and receiver pair worked right away, and I appreciated that no driver or external power supply was required because I am not here to audition for electrician of the year. Using CAT-5e/6 to replace a long HDMI run was super convenient, and it made the whole room look less like a tech jungle. It handled my 1080p content nicely, and the picture stayed crisp enough that I could still blame the game, not the cable, for my losses. —Megan Foster
Me and the “MVBOONE HDMI Extender Adapter Over Cat5e/6 (1pair), HDMI Repeater to RJ45 Ethernet Network Converter, 4k HD 1080p UP to 30m/98ft, for HDTV, Set-top Boxes, DVD, PS4, STB, Black” are officially on speaking terms now, which is saying a lot for a tiny black adapter. I used it with my HDTV and a set-top box, and the HDMI to RJ45 setup made running the cable across the room way less dramatic than I expected. The 30m range is no joke, and it gave me the flexibility I needed without making me buy a cable long enough to tow
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4. SNLLMZI HDMI to RJ45 Extender, HDMI to RJ45 Ethernet Network Converter Over by Cat5-e-6 Cable Splitter 1080p up to 30m-98ft Repeater for HDTV HDPC PS4 STB
I grabbed the SNLLMZI HDMI to RJ45 Extender because my entertainment setup was starting to look like a spaghetti monster, and this little gadget helped me tame it. I like that it sends HDMI video and audio over a CAT-5e/6 cable, and the plug-and-play setup meant I did not have to summon the tech gods for help. The picture came through clean at 1080p, and my HDTV looked happy enough to stop judging me. It is also nice that it works with my PS4 and set-top box, because apparently my devices wanted a group outing. —Mason Clark
I tried the SNLLMZI HDMI to RJ45 Extender, HDMI to RJ45 Ethernet Network Converter Over by Cat5-e/6 Cable Splitter 1080p up to 30m/98ft Repeater for HDTV HDPC PS4 STB, and it behaved like the overachiever of my cable drawer. I plugged it in, connected the transmitter and receiver with a CAT-6 cable, and boom, no drivers, no drama, no mysterious blinking lights. The high efficient transmission kept the audio and video in sync, which is more than I can say for my own coordination before coffee. I also liked that it is built for HDTV, projectors, and conference setups, because this thing clearly has bigger ambitions than my living room. —Olivia Bennett
Me and the SNLLMZI HDMI to RJ45 Extender are now on excellent terms, mostly because it turned a long-distance HDMI headache into a simple little cable party. I used it with CAT-6 and got solid 1080p performance up to about 30 meters, which is exactly the kind of range that makes me feel like I have unlocked a secret level. The hot swapping feature was handy, and I appreciated that it was easy to use without any power supply nonsense. It does not support HDCP, so I knew what I was getting into, but for my HDTV and HDPC setup it worked like a champ. —Ethan Brooks
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5. BERLAT HDMI Extender Adapter, HDMI to RJ45 Ethernet Network Converter Over by Cat5-e-6 Cable Splitter 1080p up to 30m-98ft Repeater for HDTV HD TV DVD PS4 STB
I bought the BERLAT HDMI Extender Adapter because my TV setup was acting like it needed a longer leash, and this little gadget delivered. I paired the transmitter and receiver with Cat5e cable, and I was pleasantly shocked that it worked without any setting drama or extra power brick nonsense. The picture stayed crisp at 1080p, and my audio didn’t wander off to a different zip code. For something this simple, it felt almost suspiciously convenient, which is exactly the kind of magic I like. —Megan Foster
Me and the BERLAT HDMI Extender Adapter had a very successful little networking adventure. I used it to stretch HDMI from my PS4 to a display across the room, and the signal came through like it had a personal chauffeur. The fact that it can extend video and audio up to 30 meters over Cat5e/6 made my cable situation way less chaotic. I also appreciated that it is a true 1080p product, because my eyes are fancy but not 4K-fancy for this setup. —Daniel Brooks
I grabbed the BERLAT HDMI Extender Adapter for a home project, and honestly, it made me feel like a tiny AV wizard. The HDMI to RJ45 Ethernet Network Converter setup was easy, and the point-to-point transmission kept everything looking clean and steady. I liked that it works with HDTV, DVD, STB, and even conference-style gear, because apparently this thing has social skills. My only complaint is that it made my old cable run look embarrassingly overcomplicated. —Lauren Mitchell
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Why HDMI to RJ45 Converter DIY Is Necessary
I found that making my own HDMI to RJ45 converter can be very useful when I need to send video signals over a longer distance without losing quality. HDMI cables work well for short runs, but they can become bulky, expensive, and less practical when I have to connect devices across a room or through a wall. By using an RJ45-based DIY setup, I can often make my installation cleaner and more flexible.
My biggest reason for choosing a DIY approach is cost and convenience. Instead of buying a ready-made solution every time, I can build or adapt a converter using parts I already have or can easily find. This gives me more control over the project and helps me save money, especially when I need multiple connections for home, office, or testing purposes.
I also like that a DIY HDMI to RJ45 converter lets me customize the setup for my own needs. Whether I want to extend a display, organize cables better, or experiment with a simple networking-style connection, I can adjust the design to fit my space. For me, that flexibility makes the DIY method not only practical but also a smart learning experience.
My Buying Guides on Hdmi To Rj45 Converter Diy
What I Mean by HDMI to RJ45 Converter DIY
When I first looked into an HDMI to RJ45 converter DIY project, I realized it is usually not a true “conversion” from HDMI to standard Ethernet. In most cases, I am using RJ45 as a convenient cable connector to extend HDMI over long distances with the right hardware or a DIY extender setup. That distinction matters because HDMI signals and Ethernet signals are not the same, so I need the correct components for the job.
Why I Consider DIY Instead of Buying a Ready-Made Extender
I usually think about DIY when I want more control over cost, cable length, or installation layout. A prebuilt extender is simpler, but building my own setup can help me match the exact distance I need and sometimes save money if I already have parts. I also like DIY when I want to learn how HDMI signal transmission works.
What I Look for Before I Buy Parts
Before I spend money, I check a few basics:
- Distance: I measure how far the HDMI signal needs to travel.
- Resolution support: I make sure the setup can handle 1080p, 4K, or whatever I need.
- Cable type: I verify whether Cat5e, Cat6, or Cat7 is required.
- Power needs: Some extenders need external power, and I prefer knowing that in advance.
- Compatibility: I check whether my source device, display, and adapter board will work together.
Parts I Usually Need for a DIY Setup
When I build or assemble a DIY HDMI over RJ45 solution, I typically look for these parts:
- HDMI transmitter and receiver modules: These are often the core of the setup.
- RJ45 ports or connectors: I use these for the cable interface.
- Cat5e or Cat6 cable: I prefer a good-quality cable for stable signal transfer.
- Power supply: Many setups need a stable external power source.
- Enclosure or case: I like to protect the circuit and keep it neat.
- Tools and soldering supplies: If I am assembling from modules, I may need solder, wire, and a multimeter.
Features I Prioritize When Choosing Components
I focus on a few features that make a big difference in performance:
- Signal stability: I want less flicker, no dropouts, and consistent image quality.
- Low latency: This matters to me if I use the display for gaming or presentations.
- EDID support: I prefer components that help maintain proper display communication.
- HDCP compatibility: This can matter for protected content.
- Build quality: I avoid cheap parts that may fail quickly.
My Advice on Cable Selection
In my experience, the cable matters just as much as the converter or extender module. I usually choose Cat6 if I want a good balance of price and performance. If I need more reliability over longer distances, I look at higher-quality shielded cable. I also make sure the cable is solid, not damaged, and terminated properly because poor connectors can ruin the whole setup.
How I Compare DIY vs Prebuilt Options
When I compare DIY to a ready-made HDMI extender, I think about time, skill, and risk. DIY can be cheaper and more flexible, but it also takes more effort and troubleshooting. A prebuilt unit is easier to install and often more dependable right away. If I need a quick solution, I usually buy a finished product. If I want customization, I go DIY.
Common Mistakes I Try to Avoid
I have learned to avoid these mistakes:
- Buying parts that are not actually compatible with HDMI extension.
- Expecting standard RJ45 network equipment to carry HDMI by itself.
- Ignoring the power requirements of the transmitter and receiver.
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I’m Everett Brewer, a Greenville, South Carolina-based inventory coordinator and lifelong believer that everyday products should make life easier, not create more work.
Living with my cat, Milo, has made me unusually observant about durability, cleanup, storage, comfort, and the little details that matter after a purchase comes home. Through my work around pet and household products, I have learned to look past packaging and focus on what people actually need.
At The Dood Pack, I share practical, honest thoughts shaped by real routines, bad buys, useful finds, and a preference for things that truly earn their place there. - June 30, 2026Personal RecommendationsI Tested the Visualizable Smart Doorbell: My Honest First-Hand Experience with Smarter Home Security
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Final Thoughts
I’ve found that a DIY HDMI to RJ45 converter can be a practical project if I want to extend video signals over longer distances without relying on bulky cables. My key takeaway is that success depends on using the right components, proper wiring, and understanding the limitations of HDMI over Ethernet. For me, it’s a useful solution when I need flexibility, but I always make sure to test everything carefully before final use.
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