Diagnostics
Internet speed test
Test your internet speed in one click. This free internet speed test measures your download speed, upload speed and latency in about twenty seconds — nothing to install, no account, no advertising.
Short answer
Press Start test below. This free internet speed test runs in the browser and measures your download speed, upload speed and latency in about twenty seconds — nothing to install and no account. As a rule of thumb: 25 Mbps download is enough for one person, 100 Mbps for a household of several devices, and latency under 40 ms keeps video calls and games responsive.
Opens a new chat with the question and this page filled in
Takes about 20 seconds
—Mbps
—Mbps
—ms
How to test your internet speed
Three steps, about twenty seconds. Run the test in this browser — there is no software to download and no sign-up — and you get three numbers: download in Mbps, upload in Mbps, and latency in milliseconds.
01
Close anything using the connection
Pause large downloads, streaming, cloud backups and other devices in the house. They share the line, so the result comes back lower than the line actually delivers.
02
Press Start test and leave the tab open
The test measures latency first, then download speed with several parallel transfers, then upload speed. It takes about twenty seconds and uses roughly 65 MB of data.
03
Run it twice — on Wi-Fi, then by cable
The wired figure shows what the line delivers; the wireless figure shows what the device actually gets. A large gap means the router, the distance or the adapter is the bottleneck, not your provider.
What your speed test result means
Download speed decides how much arrives at once, upload decides what you can send, and latency decides how quickly the connection responds. The same numbers mean different things at different scales:
| Result | What it covers |
|---|---|
| Under 25 Mbps | One person browsing, email and music. One HD stream is about the limit. |
| 25–100 Mbps | A household of three or four with several devices and one or two HD streams. |
| 100–500 Mbps | Several 4K streams, large game downloads and cloud backups running at once. |
| 500 Mbps and up | Large households, or moving very large files every day. Beyond this, your Wi-Fi is usually the limit. |
| 10 Mbps upload | Comfortable for video calls, photo backup and screen sharing. |
| Under 40 ms latency | Calls and games feel responsive. Over 100 ms feels delayed, whatever the speed. |
| About 65 MB per test | Data one run of this test uses, downloaded and uploaded. Keep it in mind on a metered connection. |
What Mbps means
Megabits per second, not megabytes. Divide by eight for file size: a steady 100 Mbps downloads roughly 12 MB every second. Latency is the round-trip time in milliseconds — it decides how snappy a connection feels, not how fast it is.
Why it differs from your plan
Provider speeds are "up to" figures measured on a wired connection with nothing else running. Wi-Fi, walls, other devices in the house, a VPN, and the age of your router all sit between their promise and your device.
Testing properly
This runs in the browser and uses about 65 MB of data, measured against Cloudflare’s network. Stop large downloads first, and test once on Wi-Fi and once by cable — the gap between the two tells you whether your Wi-Fi is the bottleneck.
Internet speed test questions
How do I test my internet speed?
Press Start test and keep the tab open. The test takes about twenty seconds: it checks latency first, then measures download speed with several parallel transfers, then upload speed. You get three numbers — download in Mbps, upload in Mbps, and latency in milliseconds.
What is a good internet speed?
For a single person: 25 Mbps down is comfortable for browsing and one HD stream, 50–100 Mbps for a household with several devices. 4K streaming wants about 25 Mbps per screen, video calls want 3–5 Mbps up, and gaming depends more on latency — under about 40 ms feels responsive.
Why is my result lower than the speed I pay for?
Provider figures are "up to" speeds measured on a cable with nothing else running. Wi-Fi distance and walls, an older router, other devices streaming, a VPN, and the network adapter in your device all reduce what arrives at this browser. Test by cable to see the line itself.
Should I test on Wi-Fi or with an Ethernet cable?
Both, and compare. The wired figure shows what the line delivers; the Wi-Fi figure shows what your device actually experiences. A large gap means the wireless side — router placement, channel congestion or an old adapter — is the thing worth fixing.
Why is my upload speed much slower than download?
Most home connections are asymmetric by design: the line is built to deliver far more than it sends. Upload matters for video calls, cloud backups and uploading video, so check the upload figure if calls look soft or file uploads crawl.
Does this speed test use my data allowance?
Yes — about 65 MB per run, downloaded and uploaded to measure throughput. On a metered mobile connection, bear that in mind before running it repeatedly.
A slow result is often the wireless side rather than the line. Work through Wi-Fi connected but no internet or, if pages themselves feel heavy, the slow browser guide. For the numbers behind a result — what 25, 100 or 500 Mbps actually covers — read what is a good internet speed.