01Ping and jitter
How fast our server answers and how much that time varies. Important for video calls and games.
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INTERNET SPEED
Free Internet Speed Test
See how fast your connection really is. One click measures download speed, upload speed and ping, right in your browser and in under half a minute.
Test Internet Speed on This Device
The test starts only after your click. Random test data travels between your device and our own server. The result stays only in this browser tab and is erased when you close it. We do not save your result or your IP address on our server.
Data use: the test can use up to 125 MB of data. On a mobile plan with limited data, a WiFi test is the better choice.
This only changes the tips below the result, not the measurement.
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02Download speed
How fast data reaches you. Important for video, web pages and updates.
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03Upload speed
How fast data leaves your device. Important for video calls and sending files.
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Check Download Speed, Upload Speed and Ping
Download speed shows how quickly you receive data, upload speed how quickly you send it, and ping how long a signal needs to reach our server and return. Together they show what your connection can do.
04Connection reported by your browser
Your browser can describe the connection only roughly, and some browsers report nothing.
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05Is it enough?
Rule-of-thumb values for everyday use, based on recommendations from video and video call services.
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06Compare with your plan
Enter the speed from your contract to see how close the measurement is.
For fixed lines a contract often names a normally available and a maximum speed, for mobile an estimated maximum. Enter the value from your contract.
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Tips for your connection
- For a better result: close other downloads and streams, move close to your router or use a cable, and test more than once.
- Mobile speed changes with place, signal and time of day. Test in several spots and at different hours.
- With DSL and VDSL, speed depends on the length and quality of the phone line, and download is usually much faster than upload.
- Cable lines are shared with neighbors, so speed can drop at busy hours.
- With fiber, the limit is more often your WiFi, your device or this test than the line. Test with a cable if you can.
- Satellite connections often have a longer ping than wired ones. A clear view of the sky and good weather help.
WiFi Speed, Latency, Jitter, Network Performance
WiFi speed
WiFi is often the slowest part of a home connection. Walls, distance to the router, other networks and many devices at once can lower the speed. A cable shows what your line can really do.
Latency (ping)
Latency is the time a small signal needs to travel to a server and back, measured in milliseconds. Lower is better. For video calls and online games, latency often matters more than top speed.
Jitter
Jitter shows how much latency changes from one signal to the next. High jitter can cause choppy calls and sudden lag, even when the speed is high.
Network performance
Real-life performance depends on speed, latency, jitter and how many devices share the connection. Test at different times of day to see the typical picture, not only the best moment.
How this speed test works
Your browser downloads random test data from our server for a few seconds and then sends some back. The page calculates the speed from the time this takes and measures ping with many tiny requests. The test shows the speed to our server, so visitors far away from it may see lower values.
Data: test data travels only between your device and our own server. Our site is delivered through Cloudflare, which processes your IP address technically. We do not save your IP address or your result for this test.
This test is a guide, not an official proof. For disputes with your provider, use the official measurement of your regulator, in Germany the Breitbandmessung of the Bundesnetzagentur.
Internet Speed Test: Frequently Asked Questions
How to Test Internet Speed
Close other downloads and streams, move close to your router or connect a cable, then press “Start speed test” and wait until all results appear. Test two or three times at different hours and compare the results.
Why Is My Internet Slow
Common reasons are a weak WiFi signal, many devices using the connection at once, a busy hour on a shared line, an old router or cable, a limit in your plan, or a problem at your provider. Test with a cable first: if the cable result is much better, the cause is your WiFi.
What is a good internet speed?
It depends on what you do. For example, a popular streaming service recommends 3 Mbit/s for HD, 5 Mbit/s for Full HD and 15 Mbit/s for 4K, and a popular video call service lists about 1.2 to 3.8 Mbit/s for HD calls. If several people share the connection, add these values up.
What are download speed, upload speed and ping?
Download speed is how fast you receive data, upload speed is how fast you send it, and ping is the time a signal needs to reach a server and return, in milliseconds. Speeds are shown in Mbit/s, megabits per second.
Why is my result lower than the speed in my contract?
Contracts usually name a maximum or “up to” speed. Real speed is often lower because of WiFi, busy hours, the distance to the server, your device and the line itself. Use the comparison field and test several times. For formal disputes, use the official measurement of your regulator.
Is WiFi slower than a cable?
Often yes. WiFi speed depends on distance, walls and other networks, while a cable gives a steadier result. If you can, test once with a cable to see what your line can do.
How much data does the test use?
The test uses up to 125 MB of data, depending on how fast your connection is. On a mobile plan with limited data, prefer WiFi or accept this use.
Is this speed test private?
The test starts only after your click, uses no cookies and does not save your result or your IP address. Test data travels only between your device and our own server.
