5G and 4G Mobile Speed Test
Test your 4G or 5G mobile data speed with a data cap you pick: 10, 25 or 50 MB. The test stops at the cap and shows how many MB it used, as it goes.
Mobile speed test with a data cap
- Pick a data cap. 25 MB suits most 4G and 5G connections.
- Press Start test and watch the MB counter just below it. The test stops at your cap.
This test will use up to 25 MB of data.
Standard is recommended for home broadband. Choose Data saver for a shorter test on metered data.
- 01 Ping
- 02 Download
- 03 Upload
- 04 Results
Ready. Press Start test to begin.
The test could not finish
Data used by this test Bytes the test downloaded and uploaded, counted as they arrive. The browser and network add a little overhead, which the cap already allows for.
0.0 MB of 25 MB cap
Download can use up to about 17 MB and upload about 7 MB of the 25 MB cap.
You are looking at a shared result
Someone shared this result. It was measured on their connection, not yours.
Press Start test to measure your own connection.
- Download How fast data reaches you from the test server, in megabits per second (Mbps). MB/s is the same speed in megabytes per second: 8 Mbps = 1 MB/s. — Mbps
- Upload How fast you can send data to the test server. It matters for video calls, sending files and cloud backups. — Mbps
- Latency Round-trip time of small HTTPS requests to the test server while your line is quiet: the median of about 20 requests, with the server’s own processing time removed. It is measured over HTTP, not with ICMP ping. — ms idle
- Jitter How much latency changes from one request to the next: the average difference between consecutive samples. Low jitter keeps calls and games smooth. — ms idle
Speed over time
Download & upload · MbpsYour speed graph will appear here when the test starts.
Connection details & advanced metrics Loaded ping, jitter, server and data use
- Latency, download Latency measured while the download test was running. A large rise over idle latency is called bufferbloat and makes calls and games lag when someone downloads. — ms under load
- Latency, upload Latency measured while the upload test was running. Uploads often raise latency more than downloads on home routers. — ms under load
- Bufferbloat How much latency rises when your line is busy (the larger of the download and upload increase). A: under 30 ms, B: under 60 ms, C: under 150 ms, D: under 400 ms, F: 400 ms or more. –
- Packet loss Share of small UDP messages lost on the way to a relay server and back. It is shown only when a real UDP test can run; otherwise it says Not measured. Failed web requests are never counted as packet loss. — %
Test details
- Your IP address
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- Internet provider
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- Approximate location
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- Test server
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- Distance to server
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- Connection protocol
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- IPv6 available
- Not checked · Run the IPv6 test
- Connection type (browser estimate)
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- Data used
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- Test duration
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- Parallel connections
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- Test mode
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- Date and time
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Location and distance come from your IP address and are approximate. Your IP address is shown only to you and is never put in a share link.
What your connection is good for
These ratings use our own published limits, not any app maker’s. See Help for the numbers behind each one.
Your recent results
No saved results yet. Finished tests are kept here, in this browser only (last 50).
| Date | Download | Upload | Latency | Jitter | Server | Mode | Actions |
|---|
What your browser reports (an estimate)
- Connection type Some browsers say whether you are on cellular or Wi-Fi. Many do not report it at all.
- Checking…
- Behaves like The browser’s speed class from recent traffic. Its top class is “4g”, even on 5G or fibre.
- Checking…
- Browser’s speed estimate
- Checking…
- Browser’s round-trip estimate
- Checking…
- Data Saver in the browser
- Checking…
Your browser cannot tell 5G from 4G. Even Chrome reports “4g” for any fast connection. Check the 5G or 4G icon in your phone’s status bar while the test runs.
How to read your mobile result
Download and upload are shown in Mbps with MB/s next to them, and latency and jitter in milliseconds. On mobile data the number that matters most is often not the top speed but how steady it is: a call needs a smooth upload and low jitter more than a high download figure.
A result with “≥” in front means the test reached your data cap while the speed was still climbing. That is common on fast 5G with a 10 MB cap. The real speed is at least that high; pick a larger cap if you want a closer figure.
| Cap | Good for | What to expect |
|---|---|---|
| 10 MB | Little data left in your pack, or a slow 4G signal | A full reading up to roughly 15 Mbps download; faster lines show a lower limit, marked “≥” |
| 25 MB | Most 4G and 5G connections | A full reading up to roughly 40 Mbps download; faster lines show “≥” |
| 50 MB | Fast 5G, when you want the closest figure | A full reading up to roughly 90 Mbps download, for twice the data of 25 MB |
TRAI’s benchmark for 4G and 5G data is latency of 50 ms or less and jitter of 50 ms or less. Our figures come from your browser and are measured differently, so treat them as a guide.
Why mobile speed changes from minute to minute
Mobile speed depends on the radio link between your phone and the tower, and on how many people share that tower at the moment. Two tests five minutes apart can differ a lot, so run two or three before you judge.
- Signal bars are not speed. Full bars do not guarantee a fast connection. Jio notes that a stronger signal is not the same as signal quality, and that you can get good speeds even on low signal strength.
- Indoors and outdoors. Walls and basements weaken the signal. Test near a window or outside to compare.
- Busy towers. In a market, a station or a stadium, many phones share one tower, and each gets a smaller slice.
- Moving. In a car or train your phone hands over between towers, and speed jumps up and down during the test.
- Your pack and phone. After the daily high-speed data in your pack runs out, speed drops to whatever the pack states. An older phone may not support the 5G bands your operator uses.
On Jio or Airtel, the Jio speed test and Airtel speed test confirm you are on that network and can trace the route from a probe on it. Before a work call on mobile data, the video call test checks upload and jitter with your camera and microphone.
How much data a mobile speed test uses
This test stops at the data cap you choose, so a test never uses more than that amount. After the test we show exactly how many MB it used, and the counter above shows it while the test runs.
About 3% of the cap is kept for network overhead. Of the rest, about 70% goes to the download and 30% to the upload, because most connections download faster than they upload. On a slow connection the test stops at its time limit first and uses less than the cap.
For comparison, the Standard size on the main internet speed test can use up to 217 MB, which is fine on Wi-Fi but a big bite out of a daily mobile pack. The optional second test on M-Lab servers uses the same cap as the size you picked, and runs only after you agree to M-Lab publishing your IP address.
Can a browser tell 5G from 4G?
No. Web pages can read only a rough speed class from the browser, and its highest class is “4g”, so 5G, fast 4G and fibre all look the same. Safari and Firefox do not share even that. The box above shows what your browser reports, labelled as an estimate.
The only reliable sign on your side is the network icon in your phone’s status bar. If it shows 5G during the test, your result is a 5G result.
How this test works
The test runs in your browser against Cloudflare’s nearest server. It measures idle latency with about 20 small HTTPS requests, then downloads and uploads with one or two connections for 3 to 8 seconds each way, stopping early at your data cap. The result shows the server that answered and the exact data used.
A browser cannot detect whether you are on 5G or 4G, and it cannot read your signal strength, so this page does not guess. The connection details it shows are the browser’s own estimates. Results stay in this browser. Read the full method on the About page.
Questions about 5G and 4G speed tests
How do I test 5G speed on my phone?
To test 5G on your phone, turn off Wi-Fi so the phone uses mobile data, open this page and pick a data cap. Check that the status bar shows 5G, then press Start test. Run it two or three times, because mobile speed changes from minute to minute.
Can I run a speed test without using mobile data?
A speed test on mobile data always uses some data, because it has to move data to measure speed. This page keeps it small: the test never goes past the cap you pick, from 10 MB. On Wi-Fi, the test uses your Wi-Fi connection instead of your mobile pack.
Why is my 5G speed low even with full signal bars?
5G speed can be low with full bars because bars show signal strength, not signal quality or how busy the tower is. A crowded tower or interference can slow a strong signal. Test at another time or place, and compare with the result on 4G.
Can this page show 5G speed in my area?
This page cannot show speeds in your area, because it keeps no results from other people. For coverage, see the operators’ own maps and pages: Jio True 5G, Airtel 5G Plus and Vi 5G.
Does this test work on Vi and BSNL?
This test works on Vi, BSNL, Jio, Airtel and any other network, because it runs in the browser and needs no app. It measures the connection your phone is using at that moment, whichever operator provides it.