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Knowledge document #3539

FRITZ!Box 7581

This support document is available for the following products:

What Wi-Fi speeds can be achieved with the FRITZ!Box?

Manufacturers state the maximum Wi-Fi speeds that can be achieved as the maximum gross data rates that are technically possible. However, the actual user data rates available for file downloads, video streams, etc., are lower.

In this guide, we tell you which factors determine the gross data rates, which user data rates you can actually achieve with the FRITZ!Box and your wireless devices, and what you can do if these data rates are too low.

1 What determines the gross data rate?

The maximum possible speed of a Wi-Fi connection (gross data rate) is determined by the wireless device with the slowest speed and depends on three factors:

the wireless standard (for example Wi-Fi 5, Wi-Fi 6),
the number of data streams in MIMO multi-antenna technology (for example 1x1, 4x4),
the channel bandwidth (for example 20 MHz, 160 MHz).

2 Which gross data rates does the FRITZ!Box support?

You can find the gross data rates of current FRITZ!Box models in the following table. If your FRITZ!Box model is not listed here, you can find this information in the chapter "Technical Specifications > Ports and Interfaces" of itsmanual:

Wi-Fi standard	Band	Data streams	Channel bandwidth	Max. gross data rate
FRITZ!Box 5690 Pro
Wi-Fi 7	6 GHz	4x4	320 MHz	11530 Mbit/s
Wi-Fi 7	5 GHz	4x4	160 MHz	5760 Mbit/s
Wi-Fi 6E	6 GHz	4x4	320 MHz	9600 Mbit/s
Wi-Fi 6	5 GHz	4x4	160 MHz	4800 Mbit/s
Wi-Fi 6	2.4 GHz	4x4	40 MHz	1200 Mbit/s
Wi-Fi 5	5 GHz	4x4	160 MHz	3466 Mbit/s
Wi-Fi 4	5 GHz	4x4	40 MHz	800 Mbit/s
Wi-Fi 4	2.4 GHz	4x4	40 MHz	800 Mbit/s
FRITZ!Box 7690
Wi-Fi 7	5 GHz	4x4	160 MHz	5760 Mbit/s
Wi-Fi 7	2.4 GHz	4x4	40 MHz	1376 Mbit/s
Wi-Fi 6	5 GHz	4x4	160 MHz	4800 Mbit/s
Wi-Fi 6	2.4 GHz	4x4	40 MHz	1200 Mbit/s
Wi-Fi 5	5 GHz	4x4	160 MHz	3466 Mbit/s
Wi-Fi 4	5 GHz	4x4	40 MHz	800 Mbit/s
Wi-Fi 4	2.4 GHz	4x4	40 MHz	800 Mbit/s
FRITZ!Box 6690 Cable
Wi-Fi 6	5 GHz	4x4	160 MHz	4800 Mbit/s
Wi-Fi 6	2.4 GHz	4x4	40 MHz	1200 Mbit/s
Wi-Fi 5	5 GHz	4x4	80 MHz	1733 Mbit/s
Wi-Fi 5	5 GHz	2x2	160 MHz	1733 Mbit/s
Wi-Fi 4	5 GHz	4x4	40 MHz	800 Mbit/s
Wi-Fi 4	2.4 GHz	4x4	40 MHz	800 Mbit/s
FRITZ!Box 6670 Cable
Wi-Fi 7	5 GHz	2x2	160 MHz	2880 Mbit/s
Wi-Fi 7	2.4 GHz	2x2	40 MHz	688 Mbit/s
Wi-Fi 6	5 GHz	2x2	160 MHz	2400 Mbit/s
Wi-Fi 6	2.4 GHz	2x2	40 MHz	600 Mbit/s
Wi-Fi 5	5 GHz	2x2	160 MHz	1733 Mbit/s
Wi-Fi 4	5 GHz	2x2	40 MHz	400 Mbit/s
Wi-Fi 4	2.4 GHz	2x2	40 MHz	400 Mbit/s
FRITZ!Box 7590 AX / FRITZ!Box 5590 Fiber
Wi-Fi 6	5 GHz	4x4	80 MHz	2400 Mbit/s
Wi-Fi 6	5 GHz	2x2	160 MHz	2400 Mbit/s
Wi-Fi 6	2.4 GHz	4x4	40 MHz	1200 Mbit/s
Wi-Fi 5	5 GHz	4x4	80 MHz	1733 Mbit/s
Wi-Fi 5	5 GHz	2x2	160 MHz	1733 Mbit/s
Wi-Fi 4	5 GHz	4x4	40 MHz	800 Mbit/s
Wi-Fi 4	2.4 GHz	4x4	40 MHz	800 Mbit/s
FRITZ!Box 4060
Wi-Fi 6	5 GHz	4x4	80 MHz	2400 Mbit/s
Wi-Fi 6	2.4 GHz	4x4	40 MHz	1200 Mbit/s
Wi-Fi 5	5 GHz	4x4	80 MHz	1733 Mbit/s
Wi-Fi 4	5 GHz	4x4	40 MHz	800 Mbit/s
Wi-Fi 4	2.4 GHz	4x4	40 MHz	800 Mbit/s
FRITZ!Box 6660 Cable / FRITZ!Box 5530 Fiber / FRITZ!Box 4050
Wi-Fi 6	5 GHz	2x2	160 MHz	2400 Mbit/s
Wi-Fi 6	2.4 GHz	2x2	40 MHz	600 Mbit/s
Wi-Fi 5	5 GHz	2x2	160 MHz	1733 Mbit/s
Wi-Fi 4	5 GHz	2x2	40 MHz	400 Mbit/s
Wi-Fi 4	2.4 GHz	2x2	40 MHz	400 Mbit/s
FRITZ!Box 7530 AX
Wi-Fi 6	5 GHz	3x3	80 MHz	1800 Mbit/s
Wi-Fi 6	2.4 GHz	2x2	40 MHz	600 Mbit/s
Wi-Fi 5	5 GHz	3x3	80 MHz	1300 Mbit/s
Wi-Fi 4	5 GHz	2x2	40 MHz	400 Mbit/s
Wi-Fi 4	2.4 GHz	2x2	40 MHz	400 Mbit/s
FRITZ!Box 7590 / FRITZ!Box 7583 / FRITZ!Box 6890 / FRITZ!Box 6591 Cable
Wi-Fi 5	5 GHz	4x4	80 MHz	1733 Mbit/s
Wi-Fi 5	5 GHz	2x2	160 MHz	1733 Mbit/s
Wi-Fi 4	5 GHz	4x4	40 MHz	800 Mbit/s
Wi-Fi 4	2.4 GHz	4x4	40 MHz	800 Mbit/s
FRITZ!Box 7582 / FRITZ!Box 7490 / FRITZ!Box 6490 Cable
Wi-Fi 5	5 GHz	3x3	80 MHz	1300 Mbit/s
Wi-Fi 4	5 GHz	3x3	40 MHz	450 Mbit/s
Wi-Fi 4	2.4 GHz	3x3	40 MHz	450 Mbit/s
FRITZ!Box 7530 / FRITZ!Box 7520 / FRITZ!Box 6850 / FRITZ!Box 4040
Wi-Fi 5	5 GHz	2x2	80 MHz	866 Mbit/s
Wi-Fi 4	5 GHz	2x2	40 MHz	400 Mbit/s
Wi-Fi 4	2.4 GHz	2x2	40 MHz	400 Mbit/s
FRITZ!Box 7510
Wi-Fi 6	5 GHz	2x2	40 MHz	600 Mbit/s
Wi-Fi 4	2.4 GHz	2x2	40 MHz	400 Mbit/s
FRITZ!Box 6820 LTE
Wi-Fi 4	2.4 GHz	3x3	40 MHz	450 Mbit/s

3 Which gross data rate does the wireless device support?

Refer to the manufacturer for information on the maximum gross data rates and other properties of the wireless device (supported wireless standards, frequency bands, data streams, and channel bandwidths), for example consult the manual. If you cannot find this information, you can refer to the current gross data rates of the wireless device that is displayed in the FRITZ!Box user interface:

Click "Home Network" in the FRITZ!Box user interface.
Click "Mesh" in the "Home Network" menu.
Click "Details" next to the corresponding wireless device.
Make note of the "Max. data rate possible" and "Current throughput" for the Wi-Fi connection. Each of the first values shows the gross data rate for the "upstream" (send direction) and the second value shows the gross data rate for the "downstream" (receive direction).

4 What determines the user data rate?

As with all radio technologies, Wi-Fi is a so-called "shared medium". Therefore, all of the wireless devices connected to the FRITZ!Box must share the total available gross data rates.

Since the gross data rates also include control data and overhead (protocol overhead), the actual user data rates available are lower. Under ideal conditions, the user data rates for Wi-Fi 7 and Wi-Fi 6 are around 60-65%, for Wi-Fi 5 they are around 50%, and for Wi-Fi 4 they are around 40% of the gross data rates.

Since data packets are lost with increasing distance and when sources of interference are present and have to be resent repeatedly, the achievable user data rates are usually lower in practice.

5 How can the user data rate be measured?

We recommend using FRITZ!App Wi-Fi to measure the user data rate and determine the influence of interference and distance on it. FRITZ!App Wi-Fi is available for mobile devices with Android and iOS; while it is measuring, it displays the user data rate of the mobile device that can actually be achieved at the respective location. The speed of the internet connection does not matter.

Start the measurement process directly next to the FRITZ!Box by tapping "Measure Wi-Fi" in FRITZ!App Wi-Fi and then move away from the FRITZ!Box to observe the effects of distance on the user data rate in real time.

6 How can the Wi-Fi speed be increased?

In the factory settings, the FRITZ!Box already evaluates its Wi-Fi environment and the quality of the connection of the wireless devices connected to it at regular intervals and automatically selects the best possible settings for stable and fast Wi-Fi connections. A significant increase of the Wi-Fi speed can therefore usually only be achieved by using additional FRITZ!Repeaters.

However, if the Wi-Fi speed of the connection between your wireless devices and the FRITZ!Box is always very low regardless of the distance, web pages only load slowly, or video streams stop playing, follow the steps in our guide Slow Wi-Fi connection.

7 Overview of Wi-Fi speeds

The following table lists examples of the maximum gross data rate and the maximum user data rate for various wireless standards, data streams, and channel bandwidths:

Wi-Fi standard	Data streams	Channel bandwidth	Max. gross data rate	Max. user data rate
Wi-Fi 7	4x4	320 MHz	11530 Mbit/s	≈ 6900 Mbit/s
		160 MHz	5760 Mbit/s	≈ 3450 Mbit/s
		80 MHz	2880 Mbit/s	≈ 1730 Mbit/s
		40 MHz	1440 Mbit/s	≈ 860 Mbit/s
		20 MHz	720 Mbit/s	≈ 430 Mbit/s
	3x3	320 MHz	8640 Mbit/s	≈ 5180 Mbit/s
		160 MHz	4320 Mbit/s	≈ 2590 Mbit/s
		80 MHz	2160 Mbit/s	≈ 1290 Mbit/s
		40 MHz	1080 Mbit/s	≈ 645 Mbit/s
		20 MHz	540 Mbit/s	≈ 330 Mbit/s
	2x2	320 MHz	5760 Mbit/s	≈ 3450 Mbit/s
		160 MHz	2880 Mbit/s	≈ 1730 Mbit/s
		80 MHz	1440 Mbit/s	≈ 860 Mbit/s
		40 MHz	720 Mbit/s	≈ 430 Mbit/s
		20 MHz	360 Mbit/s	≈ 220 Mbit/s
	1x1	320 MHz	2880 Mbit/s	≈ 1730 Mbit/s
		160 MHz	1440 Mbit/s	≈ 860 Mbit/s
		80 MHz	720 Mbit/s	≈ 430 Mbit/s
		40 MHz	360 Mbit/s	≈ 215 Mbit/s
		20 MHz	180 Mbit/s	≈ 110 Mbit/s
Wi-Fi 6	4x4	160 MHz	4800 Mbit/s	≈ 2880 Mbit/s
		80 MHz	2400 Mbit/s	≈ 1440 Mbit/s
		40 MHz	1200 Mbit/s	≈ 720 Mbit/s
		20 MHz	600 Mbit/s	≈ 360 Mbit/s
	3x3	160 MHz	3600 Mbit/s	≈ 2160 Mbit/s
		80 MHz	1800 Mbit/s	≈ 1080 Mbit/s
		40 MHz	900 Mbit/s	≈ 540 Mbit/s
		20 MHz	450 Mbit/s	≈ 270 Mbit/s
	2x2	160 MHz	2400 Mbit/s	≈ 1440 Mbit/s
		80 MHz	1200 Mbit/s	≈ 720 Mbit/s
		40 MHz	600 Mbit/s	≈ 360 Mbit/s
		20 MHz	300 Mbit/s	≈ 180 Mbit/s
	1x1	160 MHz	1200 Mbit/s	≈ 720 Mbit/s
		80 MHz	600 Mbit/s	≈ 360 Mbit/s
		40 MHz	300 Mbit/s	≈ 180 Mbit/s
		20 MHz	150 Mbit/s	≈ 90 Mbit/s
Wi-Fi 5	4x4	160 MHz	3466 Mbit/s	≈ 1720 Mbit/s
		80 MHz	1733 Mbit/s	≈ 860 Mbit/s
		40 MHz	800 Mbit/s	≈ 360 Mbit/s
		20 Mhz	347 Mbit/s	≈ 175 Mbit/s
	3x3	160 MHz	2600 Mbit/s	≈ 1200 Mbit/s
		80 MHz	1300 Mbit/s	≈ 600 Mbit/s
		40 MHz	600 Mbit/s	≈ 300 Mbit/s
		20 MHz	289 Mbit/s	≈ 130 Mbit/s
	2x2	160 MHz	1733 Mbit/s	≈ 860 Mbit/s
		80 MHz	866 Mbit/s	≈ 430 Mbit/s
		40 MHz	400 Mbit/s	≈ 200 Mbit/s
		20 MHz	173 Mbit/s	≈ 85 Mbit/s
	1x1	160 MHz	866 Mbit/s	≈ 430 Mbit/s
		80 MHz	433 Mbit/s	≈ 215 Mbit/s
		40 MHz	200 Mbit/s	≈ 100 Mbit/s
		20 MHz	86 Mbit/s	≈ 40 Mbit/s
Wi-Fi 4	4x4	40 MHz¹	600 or 800 Mbit/s²	≈ 240 or 320 Mbit/s²
	4x4	20 MHz	288 Mbit/s	≈ 120 Mbit/s
	3x3	40 MHz¹	450 or 600 Mbit/s²	≈ 180 or 240 Mbit/s²
	3x3	20 MHz	216 Mbit/s	≈ 90 Mbit/s
	2x2	40 MHz¹	300 or 400 Mbit/s²	≈ 120 or 160 Mbit/s²
	2x2	20 MHz	144 Mbit/s	≈ 60 Mbit/s
	1x1	40 MHz¹	150 or 200 Mbit/s²	≈ 60 or 80 Mbit/s²
	1x1	20 MHz	72 Mbit/s	≈ 30 Mbit/s
¹ Only usable in Wi-Fi environments with few Wi-Fi networks in the 2.4-GHz frequency band. ² Depending on the modulation method (64 QAM or 256 QAM) of the wireless devices