Internet speed and connection stability in a modern home directly depend on the frequency of your wireless network. Many users confuse speed (Mbps) with radio frequency (GHz), although the latter determines throughput and signal range. Understanding the difference between the 2.4 GHz and 5 GHz bands is essential for properly setting up a home network and troubleshooting issues with smart devices.
In this article, we'll take a detailed look at how to find out how many gigahertz your router supports and what network you're currently connected to. We'll cover built-in tools in Windows and macOS operating systems, as well as mobile apps for Android and iOS, that allow you to instantly obtain technical information about your wireless connection without installing complex software.
It often happens that a user pays a provider for a gigabit plan, but their laptop or smartphone physically cannot receive such speeds due to the limitations of the old standard. Frequency check — This is the first step in diagnosing Wi-Fi problems, which only takes a couple of minutes but gives a clear understanding of the capabilities of your equipment.
Understanding the theory: What do GHz mean in Wi-Fi?
Radio wave frequency is measured in gigahertz (GHz) and determines how data is transmitted between the router and your device. There are two main frequency ranges used in home networks: 2.4 GHz And 5 GHzThe first is older, has excellent penetration and passes through walls, but has limited bandwidth and is heavily contaminated by noise from neighboring routers and microwave ovens.
The 5 GHz band is a more modern standard that provides high speed Data transmission and is virtually free of interference from household appliances. However, it has a significant drawback: the signal's range is shorter and it penetrates concrete floors less effectively. This is why modern dual-band routers operate both bands simultaneously.
It's important to understand that the network name (SSID) often doesn't contain frequency information if the router is configured for network aggregation. In this case, the device automatically chooses which frequency to operate on, and this choice isn't always optimal. 5 GHz band can support channel widths of 80 or 160 MHz, which is critical for 4K video streaming and online gaming.
Why is 2.4 GHz slow?
The 2.4 GHz band is divided into only 13 channels, which often overlap. In an apartment building, neighboring routers create a "mess" of signals, causing speed drops even with full reception.
How to find your Wi-Fi frequency on Windows 10 and 11
The Windows operating system provides built-in tools for detailed network diagnostics that don't require third-party software. The fastest way to obtain information is to use the network status menu. This method works on all modern versions of the OS and displays the current connection speed and frequency.
To get started, open the Start menu and go to Settings → Network & Internet → StatusIn the window that opens, find the "Properties" link under the name of your active Wi-Fi connection. In the list of parameters that opens, scroll down to the "Properties" section. There, you'll see a line labeled "Frequency (GHz)," which will indicate a value of 2.4 or 5. If the line is labeled "Protocol," you'll need to calculate the frequency based on the speed (see the table below).
☑️ Check in Windows
An alternative and more professional method is to use the command line. Click Win + R, enter cmd and press Enter. In the black window, enter the command netsh wlan show interfacesIn the search results, find the "Channel" line. If the channel is in the range of 1-13, you are using 2.4 GHz. If the channel is above 30 (usually 36, 40, 44, etc.), you are using the 5 GHz frequency.
Checking the frequency on macOS (MacBook, iMac)
Apple computer users can access hidden diagnostic data through the Wi-Fi menu by holding down the Option (Alt) on your keyboard and simultaneously left-click the Wi-Fi icon in the menu bar (in the upper-right corner of the screen). This will open an expanded menu containing technical information.
Find the line in the drop-down list ChannelThe digital channel value indicates the range: values from 1 to 14 correspond to the 2.4 GHz frequency, while values from 36 and above (e.g., 149, 153) indicate operation in the 5 GHz range. The current data transfer rate (Tx Rate) and signal strength (RSSI) are also displayed here.
For a more in-depth analysis, you can use the built-in utility. Wireless Diagnostics. Click Command + Space, enter "Wireless Diagnostics" and run the program. Don't click "Continue," but select "Wireless Diagnostics" from the top menu. Window → Overview (Window → Scan). This displays all available networks, their channels, and channel widths, helping you select the least congested frequency for your router.
Determining GHz on Android and iOS smartphones
Mobile devices often hide technical details to simplify the interface, but there are still ways to check. On iPhones and iPads, Wi-Fi frequency information is hidden in the standard settings menu, but it can be viewed in system reports or through third-party Apple utilities, such as AirPort Utility (requires enabling the Wi-Fi scanner in the application settings).
On Android, the situation is simpler, but it depends on the system version and the manufacturer's user interface. In stock Android 10 and above, when connecting to a network, a "6" or "5" icon is often displayed next to the Wi-Fi name, indicating the Wi-Fi 6 or 5 GHz standard, respectively. A more reliable method is to use specialized analyzer apps, such as WiFi Analyzer or Fritz!App WLAN.
These apps plot a channel load chart and clearly indicate the frequency of each visible network. If you see a network at the bottom of the chart (channels 1-13), it's 2.4 GHz. If a network is displayed separately and has channels 36, 40, 44, and higher, it's 5 GHz. This is especially useful when your router combines both networks under a single name, and you want to ensure your phone isn't stuck on a slower band.
Channel and speed mapping table
To fully understand the numbers you see in the settings, it's helpful to refer to the reference table. It will help you compare the channel number, maximum theoretical speed, and Wi-Fi standard. Keep in mind that actual speed is always lower than theoretical due to protocol overhead and interference.
| Frequency range | Channel numbers | Wi-Fi standard | Max. speed (theoret.) | Characteristics |
|---|---|---|---|---|
| 2.4 GHz | 1–13 (14 in Japan) | 802.11n / ac | up to 600 Mbps | Long range, lots of interference |
| 5 GHz | 36, 40, 44... 165 | 802.11ac / ax | up to 6.9 Gbps | High speed, low interference |
| 6 GHz | 1 — 233 | 802.11ax (Wi-Fi 6E) | up to 30 Gbit/s | Ultra-high speed, the new standard |
Please note the standard Wi-Fi 6E, which operates at 6 GHz. This is the newest band, available only on the most modern routers and smartphones. It offers huge channel bandwidth and a clear line of sight, but its range is even shorter than 5 GHz. If your device only supports older standards, it won't be able to connect to the 6 GHz network.
What is channel width?
Channel width (20, 40, 80, 160 MHz) is the "road width" for data. At 2.4 GHz, it's rarely possible to set the channel width beyond 20-40 MHz due to interference, while at 5 GHz, the standard is 80 MHz, which doubles the speed.
Why doesn't my device see the 5 GHz network?
A common problem is that users try to find a 5 GHz network, but it simply isn't listed among available connections. This can happen for several reasons, including hardware and router settings. First, ensure your Wi-Fi adapter (in your laptop or phone) supports this frequency.
Older devices manufactured before 2013 often have modules that only operate at 2.4 GHz. Driver issues can also be the cause: even if the hardware supports 5 GHz, an outdated driver may block this function. Check the adapter model specifications on the manufacturer's website or in Windows Device Manager.
⚠️ Attention: Some regions (e.g., Japan, Israel, and some EU countries) have legal restrictions on the use of certain channels in the 5 GHz band. If your router was imported from another country or is configured for the wrong region, it may not display networks or prohibit their use. Check the region settings in your router's interface.
Another possible cause is the router's settings. The 5 GHz function may simply be disabled in the admin panel. Go to Wireless Settings and ensure that the "Enable 5 GHz" or "Wireless Radio" checkbox for this band is checked. Also, check that the network name (SSID Broadcast) isn't hidden.
Tips for optimizing frequency selection
Choosing the right frequency can dramatically improve your internet experience. For desktop devices like Smart TVs, gaming consoles, and desktop PCs, the frequency band should always be prioritized. 5 GHzIt will provide a stable, lag-free data stream when viewing 4K content or playing online games.
The 2.4 GHz band is best reserved for smart home devices: light bulbs, outlets, sensors, and vacuum cleaners. These gadgets consume little data but need to work throughout the entire house, including distant rooms and the bathroom, where the 5 GHz signal may no longer reach. Load sharing frees up the airwaves for essential tasks.
If your router supports the "Smart Connect" feature (network aggregation), it automatically decides where to connect the device. Sometimes the algorithms don't work correctly. In such cases, experts recommend manually separating the networks by giving them different names, for example, HomeWiFi And HomeWiFi_5G, and force fast devices to connect to the network with the set-top box.
⚠️ Attention: Router and operating system interfaces are constantly updated. Menu locations and item names may differ from those described in the instructions. If you can't find the setting you need, refer to the manufacturer's documentation for your specific equipment.
Keep in mind that even the 5 GHz frequency can be subject to interference if there are radars or other powerful transmitters nearby. Use the analyzer apps mentioned above to find a clear channel and manually enter it into your router settings, setting the channel width to 80 MHz for maximum performance.
Does the number of router antennas affect the frequency?
The number of antennas doesn't directly determine the frequency (2.4 or 5 GHz), but it does affect MIMO (Multiple Input Multiple Output) technology. More antennas allow for more data streams to be transmitted simultaneously, increasing speed within a single band. However, if the router is unidirectional (2.4 GHz only), even eight antennas won't make it 5 GHz capable.
Is it possible to increase the frequency from 2.4 GHz to 5 GHz using software?
No, this is impossible. The frequency range is determined by the physical characteristics of the radio module in the device. No settings, drivers, or software will force an old adapter to operate at frequencies for which its hardware is not designed. You will need to replace the network adapter or purchase a new router.
Which frequency is best for gaming?
Definitely 5 GHz. This range provides not only higher speeds but also, more importantly for gaming, lower ping (latency) and stability. At 2.4 GHz, micro-stutters are possible due to interference from Bluetooth headsets, microwaves, and neighboring routers.