What is a normal WiFi internet speed: from 20 Mbps to 1 Gbps?

Many users wonder why their internet connection is lightning fast via cable, but barely works on a smartphone in the next room. normal WiFi speed It's quite vague, as it depends on a variety of factors, from your provider's tariff to the thickness of your apartment's walls. Ideally, the speed test results should match those stated in the contract, but reality can vary.

Modern wireless standards While radio waves can transmit gigabits of data, they still have physical limitations. If you pay for 500 Mbps but only get 100 Mbps over the air, it's not always the provider's fault. Often, the problem lies in outdated equipment or the wrong frequency range.

In this article, we'll explore which metrics can be considered benchmarks for various tasks, how to distinguish a real problem from technology peculiarities, and what exactly you need to do to get the most out of your connection. Understanding these nuances will help you save money and stress when choosing a new router.

WiFi standards and their actual throughput

The first thing to understand is that theoretical and actual speeds are two very different things. The router box may say AC1200 or AX3000, but this is only the total throughput of all antennas under ideal laboratory conditions. In reality airtime is divided between all connected devices, and the signal is attenuated.

Let's look at the main wireless generations you might encounter today. Older devices can significantly slow down the entire network if guest access or client isolation isn't enabled.

• 📡 802.11n (Wi-Fi 4): An outdated standard operating at 2.4 GHz. Actual speeds rarely exceed 40–60 Mbps, even near a router.
• ⚡ 802.11ac (Wi-Fi 5): The most common standard currently operating in the 5 GHz band. It allows for real-world speeds of 300–500 Mbps.
• 🚀 802.11ax (Wi-Fi 6): A modern standard that optimizes the performance of many devices. Under ideal conditions, it can deliver speeds of 600–800 Mbps or higher.

It is important to take into account that even the most powerful router standard Wi-Fi 6 It won't be able to transmit data faster than the network card on your laptop or smartphone allows. If your device is five years old, it physically won't be able to receive a signal faster than its limit.

Why is the speed always lower than stated?

In wireless networks, a significant portion of bandwidth is consumed by overhead, error checking, and waiting for the channel to become available. Furthermore, devices cannot simultaneously transmit and receive data (half-duplex mode), which reduces the effective speed by approximately 40-60% of the theoretical value.

Frequency ranges: 2.4 GHz vs. 5 GHz

Choosing a frequency is a fundamental aspect of building a fast network. Most modern routers are dual-band, broadcasting two networks simultaneously. However, many users don't even know which one they're currently connected to.

Range 2.4 GHz Wireless has excellent penetration power. It easily passes through walls and ceilings, covering the entire building. However, it has a major drawback: a narrow channel and noise pollution. In an apartment building, the airwaves are clogged with signals from neighbors, microwaves, and Bluetooth devices, which creates a "mess" and reduces speed.

⚠️ Note: If you live in an apartment building, using the 2.4 GHz band for 4K video streaming or gaming may be impossible due to interference. Speeds in this range are considered normal, not 100+ Mbps.

Range 5 GHz — This is the choice for speed. It has a shorter range, and walls are a serious obstacle for it, but it offers wide channels and clear air. This is where you'll see those high numbers on the speed test.

Table: Normal speed values ​​for different tasks

To determine whether your current internet connection is sufficient, you need to consider what you do online. For simple messaging, a gigabit connection isn't necessary, but for high-definition streaming, it may not be enough.

Below is a table with recommended values. Please note that these speeds refer to the speed on the client's device, not at the entrance to the apartment.

If several people in your home are watching movies and downloading updates simultaneously, the speeds need to be combined. In this case, a 100 Mbps plan may no longer be sufficient for comfortable use.

Factors that reduce WiFi signal speed

Why does my router deliver 400 Mbps via cable, but barely 50 Mbps via WiFi? The list of potential culprits is long. Often, the problem lies not with the hardware, but with the environment.

Wall materials play a key role. Concrete with reinforcement, mirrored surfaces, aquariums, and even dense plant foliage can shield the signal. Metal structures in walls act as a Faraday cage, completely blocking the passage of waves.

• 🧱 Wall thickness: Each load-bearing wall reduces the signal by 10–15 dBm, which can reduce the speed significantly.
• 📺 Household appliances: A running microwave or wireless baby monitor creates strong interference in the 2.4 GHz range.
• 📶 Neighbours: If more than 10 networks are visible on the same channel within a radius, collisions and retransmissions of packets occur.

Also, don't forget about software limitations. Cheap routers often have weak processors that simply can't handle traffic encryption at high speeds. Enabling complex security features or parental controls on budget models can throttle speeds.

How to check your internet speed correctly

To obtain objective data, simply opening the provider's website isn't enough. Browser tests are often cached or use unloaded servers. A comprehensive approach is required for accurate diagnostics.

First, make sure you're in the same room as the router and there are no direct obstacles between you. Then, disconnect all other devices from the network: TVs, other family members' phones, and smart speakers. Any background updates can skew the results.

Use trusted services such as Speedtest by Ookla, Fast.com or Yandex.InternetometerIt's best to take measurements several times at different times of day, as the load on the provider's network is usually higher in the evening.

⚠️ Please note: When testing speeds through a browser on a PC or phone, the results may be lower than the actual bandwidth due to browser limitations. For accurate gigabit data rates, it's best to use specialized apps or a cable connection.

If you're testing speed on a smartphone, make sure it's not running any heavy apps. It's also a good idea to reboot your router before testing to clear its RAM.

Ways to increase WiFi connection speed

If your measurements show disappointing results, don't rush to blame your provider. There are a number of steps you can take yourself. Often, a simple setting change can work wonders.

First, go to your router settings. This is usually done via the address 192.168.0.1 or 192.168.1.1 in your browser. Find the Wireless section and try changing the broadcast channel from Auto to a free one. For 2.4 GHz, channels 1, 6, and 11 are considered the best.

If your router supports the channel width 40 MHz or 80 MHz, make sure this option is enabled. In congested environments, artificially narrowing the channel to 20 MHz can sometimes help for stability, but this will reduce the maximum speed.

• 🔄 Firmware update: Manufacturers often release patches that improve the operation of the radio module.
• 📍 Location: Raise the router higher and move it away from heat sources and metal.
• 📡 Antennas: If the antennas are removable, try replacing them with more powerful ones with a higher gain (dBi).

If your apartment is very large or has a complex layout, a single router may not be enough. In this case, it's worth considering a mesh system or a wired network with multiple access points.

FAQ: Frequently Asked Questions

Why is WiFi speed half that of cable?

This is a normal situation for wireless networks. WiFi operates in half-duplex mode (a device is either listening or speaking, but not simultaneously), and also wastes resources on error checking and interference suppression. A loss of 40-60% of the wired speed is considered technically reasonable.

Does the number of connected devices affect the speed?

Yes, it does have a significant impact. The channel's bandwidth is divided among all active clients. Furthermore, the router requires CPU time to service each connection. If 20 smartphones are connected, even without active traffic, the speed on the primary device may drop.

Do I need to buy a Wi-Fi 6 router if I have a 100 Mbps plan?

For a 100 Mbps plan, purchasing a top-of-the-line Wi-Fi 6 router won't improve internet speed, as the ISP's bandwidth itself will be the bottleneck. However, a Wi-Fi 6 router handles multiple connected devices better and provides a more stable signal in noisy environments.

Can an old phone slow down the entire network?

An old phone with a slow Wi-Fi module shouldn't throttle the speed of other modern devices if Airtime Fairness is enabled on the router. If this feature is disabled, the router may spend a disproportionate amount of time exchanging data with the slow client, delaying other devices.