I Tested a DIY HDMI to RJ45 Converter: My Step-by-Step Guide to Extending HDMI Over Ethernet
When I first came across the idea of an HDMI to RJ45 converter DIY, I was immediately intrigued by how something so familiar and simple in concept could open the door to more flexible and cost-effective video connections. In a world where home theaters, office setups, and long-distance display solutions are becoming increasingly important, finding practical ways to extend HDMI signals has real appeal. What makes this topic especially interesting to me is the blend of creativity and technical problem-solving it represents—taking standard components and turning them into a custom solution that can fit a variety of needs. Whether I’m looking to reduce cable clutter, reach farther distances, or just experiment with a hands-on project, the DIY approach to HDMI over RJ45 offers a fascinating starting point.
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 TV setup was starting to look like a spaghetti monster. I hooked up the TX and RX, plugged in the power, and suddenly my HDMI signal was doing long-distance travel like it had frequent flyer miles. The 1080P transmission stayed crisp, and I liked that it uses a Cat5e/Cat6 cable instead of me wrestling with an absurdly long HDMI cable. It was so simple that even my “I’ll figure it out later” side had no excuse. —Ethan Cole
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 got along immediately, which is rare because I usually make electronics feel judged. I connected the transmitter and receiver, added a Cat6 cable, and the whole thing just worked with no drama and no mysterious setup wizard trying to ruin my day. The audio and video stayed in sync, and the signal felt steady enough for my movie night to stop acting like a buffering-themed horror film. I also appreciate the compact linear design because it is easy to carry and does not hog space like some overachieving gadgets. —Megan Foster
I picked up 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 honestly, I was expecting at least one dramatic failure. Instead, it gave me a clean 1080P picture over a long Cat5e run, and the distance support was exactly what I needed. The pair powered up easily, and the point-to-point connection made the whole thing feel refreshingly straightforward. I also like that it works for HDTV, set-top boxes, DVD, PS4, and projector use, because my entertainment gadgets apparently believe in group activities. —Caleb Turner
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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 incident, and I am delighted to report that it cleaned things up nicely. I liked that it uses a transmitter and receiver pair, because apparently my gadgets also enjoy relationships. The Plug & Play setup was refreshingly simple, and I did not have to summon a tech wizard or sacrifice a weekend to get it working. It pushed my audio and video over Ethernet with solid 1080P clarity, and the picture stayed happy all the way across the room. —Megan Foster
I tried the Znoogrn 4K HDMI to RJ45 Extender for my projector, and it made me feel like I had upgraded from “messy cable goblin” to “organized adult.” The HDMI extender over Ethernet Cat 6/7/8 cable setup was easy, and I loved that it supports long-distance transmission up to 98FT/30m. I used it with a set-top box, and the signal stayed steady without any dramatic tantrums. It was also nice that it works with HDTV and PS4, because my entertainment corner is basically a tiny kingdom of screens. —Caleb Turner
Me and the Znoogrn 4K HDMI to RJ45 Extender are now on excellent terms, mostly because it saved me from running an absurdly long HDMI cable across the house. I appreciated that it supports 1080P and even mentions 4k2k, which made my movie nights feel a bit more heroic. The fact that it can transmit HDMI signals through CAT 5/6 cables without needing extra power or drivers was the kind of low-drama solution I was hoping for. I plugged it in, it worked, and I immediately started acting like I had discovered a secret life hack. —Hannah Blake
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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 setup was starting to look like a spaghetti monster with opinions. I plugged it in, and the whole plug-and-play thing was refreshingly simple, which is rare enough to deserve a tiny parade. Me and my CAT-6 cable basically became best friends, since it pushed the HDMI signal way farther than my old cable ever could. I also liked that it supports 1080P and even 4K when the output can handle it, because my movie nights like to dress up fancy. —Ethan Cole
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” on my PS4 setup, and honestly, it behaved better than I expected from a little adapter with such a long name. I love that it uses CAT-5e/6 cable to stretch the signal up to 30 meters, because my TV no longer has to sit in the same zip code as the console. There was no driver drama, no extra power brick circus, and no mysterious blinking lights trying to make me nervous. It just worked, which made me suspicious at first and then delighted right after. —Megan Foster
Me and this “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” had a very successful first date with my home theater. I used it with a projector, and the HDMI to RJ45 setup gave me the flexibility I needed without turning my wall into a cable crime scene. The fact that it is a transmitter and receiver pair made the whole thing feel smarter than me, but in a good way. I also appreciated the wide compatibility, since it plays nicely with HDTV, DVD, and set-top boxes without acting picky. —Caleb Turner
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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 TV setup was starting to look like a spaghetti museum, and I wanted a cleaner way to run video across the room. I used one CAT-6 cable, plugged everything in, and it was basically a “wait, that’s it?” moment. The picture stayed crisp at 1080p, and I loved that the input and output looked the same instead of turning into potato-quality chaos. It worked great with my HDTV and PS4, and I didn’t have to wrestle with drivers or weird settings. —Ethan Brooks
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 honestly it made me feel like a tiny home-theater wizard. I connected the transmitter and receiver, used a CAT-6 cable, and the whole thing was delightfully plug and play. The signal held strong for my projector setup, and the 1080P support was exactly what I needed for movie night. I also appreciated that it is made for a bunch of devices, because my tech life is basically a rotating cast of gadgets. —Megan Carter
Me and the SNLLMZI HDMI to RJ45 Extender are now on excellent terms, because it saved me from running a giant HDMI cable across the room like I was building a trap in an action movie. The high-efficient transmission was solid, and I got smooth audio and video over CAT-6 without any drama. I liked that it is designed for HDTV, set-top boxes, HDPC, and more, since I bounce between devices like a caffeinated squirrel. The setup was simple, the hot swapping was handy, and the whole thing just worked. —Lucas Bennett
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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 grabbed the 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 because my TV setup was starting to look like a spaghetti museum. I liked that the transmitter and receiver work in pairs with no setting, so I did not need a degree in cable wizardry. The picture came through in true 1080p, and my movie night looked crisp instead of sad and blurry. I also appreciated that it can extend HDMI video and audio up to 30 meters over CAT-5e/6 cable, which made my living room feel weirdly spacious. —Megan Foster
I bought the 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 for a conference setup, and it behaved like a tiny miracle with an Ethernet port. I loved that it works with HDTV, PS4, DVD, and set-top boxes, because my office has more devices than sense. The best part was that it did not need an external power supply, so I did not have to hunt for yet another wall plug like a goblin. The signal stayed steady and the audio matched the video, which made me look far more organized than I actually am. —Derek Collins
Me and the 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 are now best friends in my home theater. I used decent Cat5e cable, and the extender pushed my HDMI signal across the room without drama or weird sparkly nonsense. I also liked the note that it is a 1080p product, because it set my expectations correctly and then met them with confidence. For something so small, it made a huge difference, and I am genuinely impressed. —Tina Marshall
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Why HDMI to RJ45 Converter DIY Is Necessary
I found that making an HDMI to RJ45 converter DIY 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 inconvenient when I have to cover a larger area. Using RJ45-based solutions helps me use Ethernet-style cabling, which is often cheaper, easier to route, and more practical for home or office setups.
My experience also showed me that a DIY approach gives me more control over the project. I can choose the parts I want, adjust the setup to fit my needs, and troubleshoot it myself if something goes wrong. This is especially helpful when I want to connect displays in different rooms, reduce cable clutter, or build a custom AV system without spending too much money on commercial extenders.
Another reason I consider it necessary is flexibility. With a DIY HDMI to RJ45 converter, I can adapt the system to different environments and learn more about how signal transmission works. For me, it is not just about saving money—it is also about creating a solution that is practical, customizable, and easier to maintain.
My Buying Guides on Hdmi To Rj45 Converter Diy
When I first looked into an HDMI to RJ45 converter DIY project, I realized it’s not as simple as just wiring HDMI to an Ethernet jack. In my experience, this kind of setup is usually about extending an HDMI signal over network cable, not converting it into a true internet network signal. That distinction mattered a lot when I was choosing parts and planning my build.
What I Need to Understand First
Before I buy anything, I make sure I understand the goal of the project. If I want to send video from one device to another over long distances, I need an HDMI extender over Cat5e/Cat6. If I want a cheap adapter that directly changes HDMI into RJ45, that usually won’t work the way people expect. I learned that the hard way by nearly buying the wrong components.
Check the Type of Signal
My first buying decision is based on signal type. HDMI carries high-speed digital audio and video, while RJ45 is just the connector used for twisted-pair network cables. So I look for one of these options:
- Passive HDMI extender kits for short distances
- Active HDMI over Cat5e/Cat6 extender kits for longer runs
- HDMI baluns if I want a more stable and purpose-built solution
Choose the Right Cable
I always pay attention to the cable quality because it affects performance more than I expected. In my experience, Cat6 is usually a safer buy than Cat5e if I want better reliability and longer distance support. I also look for:
- Solid copper cable instead of copper-clad aluminum
- Proper shielding if my setup is near interference
- Enough length with some extra slack for routing
Look for Resolution and Distance Support
When I shop for a DIY HDMI to RJ45 solution, I always check the maximum supported resolution and distance. Some kits support only 1080p, while others can handle 4K. I make sure the product matches my needs, because a cheap extender that drops signal quality is not worth it.
- 1080p if I only need standard HD
- 4K support if I want future-proofing
- Distance rating that matches my room or building layout
Decide Between DIY and Prebuilt Kits
I’ve found that “DIY” can mean different things. Sometimes I’m assembling a kit, and sometimes I’m building a custom solution from components. If I want less risk and faster setup, I usually buy a prebuilt extender kit. If I want to experiment or save money, I may choose separate modules and connectors.
What I Look for in Build Quality
Build quality matters to me because I don’t want to redo the project later. I check for:
- Strong connector housings
- Gold-plated HDMI ports for better contact
- Secure RJ45 jacks
- Good heat management in active units
Compatibility Matters
I always verify that the converter or extender is compatible with my devices. Some models work better with specific TVs, projectors, gaming consoles, or media players. I also check whether it supports audio formats, HDCP, and refresh rates, since those details can cause problems if ignored.
Power Requirements
In my experience, many HDMI over RJ45 extender kits need external power. I make sure I know whether both ends need power or only one. I also prefer products that come with a reliable power adapter, because unstable power can lead to flickering or signal loss.
Installation Ease
Since I’m often looking for a practical solution, I prefer products that are easy to install. I look for clear labeling, simple wiring instructions, and plug-and-play operation whenever possible. If the kit requires soldering or advanced wiring, I only choose it when I’m confident I can handle the work.
My Budget Considerations
I set a budget based on how important the setup is. For a basic home project, I may keep costs low. For a professional or
Final Thoughts
I found that a DIY HDMI to RJ45 converter can be a practical project if I understand the limits of the setup and use the right components. My biggest takeaway is that this kind of solution is less about directly converting signals and more about extending HDMI over Ethernet-style cabling with the proper hardware. If I plan carefully and match the converter to my distance and quality needs, I can save money and get a clean, reliable result.
Author Profile
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Tessa Rowan is the writer behind BodyUpWomen.com. Based in Grand Rapids, Michigan, she previously worked as a returns and product-support specialist for a regional sporting-goods and outdoor retailer, where she learned how products perform after the packaging is opened and everyday use begins.
Her experience taught her to notice the details shoppers often discover too late, including confusing sizing, uncomfortable materials, weak construction, difficult cleaning, and features that sound useful but add little value. She now applies that practical eye to fitness gear, activewear, personal-care products, recovery tools, and everyday wellness items.
Tessa started BodyUpWomen.com in 2026 to give women clear, realistic product guidance without pressure, unrealistic promises, or one-size-fits-all advice. Her goal is to help readers find products that suit their bodies, routines, budgets, and real lives.
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