Free speed test · no app · no signup
Internet Speed Test
Press GO to start
The test runs against Cloudflare's network or ClickZM's server. ClickZM does not store your results; history stays in this browser.
To test your internet speed, press GO. ClickZM measures your ping and jitter, then your download and upload speed in Mbps over several parallel connections to the nearest Cloudflare data centre, plus your latency while the line is busy (bufferbloat). The test takes about 20 seconds and works in any browser on Wi-Fi, broadband, fibre or mobile data.
How the speed test works
- 1Ping and jitter. Twenty small requests measure the round trip to the test server. The first two are discarded (they include DNS and TLS set-up); ping is the median of the rest and jitter is the average change between consecutive round trips.
- 2Download speed. Six parallel connections download random, incompressible data for 10 seconds. The first seconds, while TCP ramps up, are skipped; the result is the average of the remaining half-second windows after dropping the slowest 30% and the fastest 10%.
- 3Upload speed. Up to four connections upload random data for 8 seconds, measured the same way from the bytes your browser actually sends.
- 4Latency under load. Ping keeps running during the download and upload. The extra delay compared with idle ping is bufferbloat, the cause of lag in games and choppy video calls when someone else is using the internet.
What is a good internet speed?
It depends on what you do and how many people share the connection. These are typical minimums per person or device:
| Activity | Download | Upload | Ping |
|---|---|---|---|
| Web browsing and email | 5 Mbps | 1 Mbps | < 100 ms |
| HD video streaming (1080p) | 10 Mbps | 1 Mbps | any |
| 4K streaming | 25 Mbps | 1 Mbps | any |
| HD video calls (Zoom, Teams, Meet) | 4 Mbps | 4 Mbps | < 100 ms |
| Online gaming | 10–25 Mbps | 3 Mbps | < 40 ms, low jitter |
| Working from home, several devices | 100 Mbps+ | 20 Mbps+ | < 50 ms |
Mbps or MB/s?
Internet plans are sold in megabits per second (Mbps). Downloads in browsers and games usually show megabytes per second (MB/s). One byte is eight bits, so 100 Mbps is 12.5 MB/s. Switch the unit above the gauge to see either.
Why is my speed test slower than my plan?
- Wi-Fi loses speed with distance and walls. Test once next to the router, or with an Ethernet cable, to see the speed your provider delivers.
- Use the 5 GHz or 6 GHz Wi-Fi band when you are close to the router; 2.4 GHz reaches further but is slower and more crowded.
- Other devices, cloud backups, game updates and streaming on the same connection share the bandwidth during the test.
- VPNs and proxies add distance and overhead. Turn them off to measure the line itself.
- Older routers, phones and laptops may not support the full speed of a fibre or gigabit plan.
- Restart the router if speeds are far below normal, and contact your provider if wired results stay low at different times of day.
Speed test: questions people ask
How accurate is this internet speed test?
It uses the same approach as major speed tests: several parallel connections, a warm-up period that is skipped, and a robust average rather than a single peak. Results depend on the route to the test server, your Wi-Fi and what else is using the line, so two tests a minute apart can differ by a few percent. For the most reliable figure, test over Ethernet and repeat at different times of day.
What is a good ping for gaming?
Under 20 ms is excellent, 20–40 ms is good for competitive games, 40–80 ms is playable, and above 100 ms you will notice lag. Steady latency matters as much as low latency, so also check jitter and the latency under load.
What is jitter in a speed test?
Jitter is how much the ping changes from one measurement to the next. Below 10 ms is good; high jitter causes stutter in games and robotic audio in calls, even when the average ping looks fine.
What is bufferbloat and how do I fix it?
Bufferbloat is extra delay that appears when your connection is busy, because the router queues too much data. An A or A+ grade means little extra delay. To fix a poor grade, enable Smart Queue Management (SQM), QoS or cake in your router settings, or upgrade to a router that supports it.
Is this a Wi-Fi speed test or a broadband speed test?
Both. It measures the connection of the device you run it on, so on a laptop on Wi-Fi it shows your Wi-Fi speed, and over an Ethernet cable it shows your broadband line speed. Comparing the two tells you whether Wi-Fi is the bottleneck.
Why is my upload speed lower than my download speed?
Most cable, DSL and mobile plans are asymmetric: they give more capacity to downloads because people download far more than they upload. Fibre plans are often symmetric, with equal upload and download speeds.
How much data does a speed test use?
It depends on your speed, because the test runs for a fixed time. Roughly: 25 MB on a 10 Mbps line, 250 MB at 100 Mbps and over 1 GB on gigabit connections. Keep that in mind on capped mobile data.
What does the single-connection mode show?
Most downloads use several connections, so Multiple is the default and matches how speed is advertised. Single shows what one connection can reach, which is useful for diagnosing high latency routes or throttling of individual streams.
Is ClickZM an alternative to Speedtest by Ookla or Fast.com?
Yes. Like them it measures download, upload and ping in the browser; it also reports jitter, latency under load with a bufferbloat grade, and what the connection is good for, without an app or account. Results from different services can differ because each uses its own servers.
Does ClickZM store my speed test results?
No. The measurement runs between your browser and the test server, and ClickZM keeps no record of it. Your recent results are saved only in this browser so you can compare them, and you can clear them at any time.
Can I test my Jio, Airtel, Xfinity or Spectrum internet speed?
Yes. The test works with any internet provider and connection type: fibre, cable, DSL, 4G, 5G or satellite. It measures the speed you get from your provider out to the internet. Providers' own apps may test against servers inside their network, which can read a little higher.
How do I run a ping test from the command prompt (CMD)?
On Windows, open Command Prompt and type ping -n 10 1.1.1.1; on Mac or Linux, open Terminal and type ping -c 10 1.1.1.1. The time= values are your round-trip latency in milliseconds. This page measures the same thing in the browser, plus jitter and latency under load.
What internet speed do I need to work from home?
For one person on video calls, about 25 Mbps down and 5–10 Mbps up with a ping under 50 ms is comfortable. Add roughly 25 Mbps for each other person streaming or on a call at the same time.
Can I test internet speed on an iPhone, PS5 or smart TV?
Yes, on any device with a modern browser: iPhone, Android, laptop, PC, Mac and most smart-TV browsers. PlayStation and Xbox also have a built-in connection test in their network settings; for the most accurate result on a console, test from a device on the same cable or Wi-Fi.