HDMI cables are the most common way to connect a device to a TV or, in many cases, a monitor as well. On the market, we find HDMI cables of various sizes. Some are around 30 cm long, while others are several meters long.
If you are curious about the maximum length of an HDMI cable, there is no such definition.. The official HDMI standard specification does not define a maximum cable length.
However, any digital signal traveling over an HDMI cable encounters resistance. The level of resistance depends on several factors, the most important being the cable conductor material and its gauge.
As a result, depending on its conductor and gauge, an HDMI cable can only go so far before the signal starts to degrade, causing problems with the video or audio output.
Maximum length of an HDMI cable
The HDMI specification does not indicate the maximum cable length, but the cable type determines the maximum length.
ONE passive hdmi cable is a standard HDMI cable, which has HDMI ports at each end connected by shielded copper wiring.
O active hdmi cables they can reach longer lengths than passive HDMI cables. Active cables are able to do this because they use electronic circuitry to boost the signal and compensate for any degradation.
O optical hdmi cables, on the other hand, use light instead of electricity to move the signal from one end to the other. Light is less prone to degradation than an electrical signal traveling through copper wire. However, an optical cable is often more expensive than its active counterparts.
Depending on the generation of HDMI, the length of an optical HDMI cable can be up to 100 meters or even more.
conclusions
As you can see, the maximum length of an HDMI cable is not as short as you might expect. Fortunately, between passive, active and optical HDMI cables, it’s easy to find a suitable cable to suit your needs. And if you need something even longer, you can always use an extender.
With that said, select reputable brands when shopping for an HDMI cable and look for official certification to get the best quality cables.
For example, Premium High Speed ​​and Ultra High Speed ​​HDMI cables are certified by HDMI License Manager. Certification will ensure that the cable meets the requirements to support the features offered by your HDMI generation.