Internet Speed Test

Test your internet speed online for free. Measure download and upload speed in Mbps plus ping and jitter, and see if your connection can handle streaming, gaming, and video calls.

Press start to measure your download speed, upload speed, ping, and jitter.

The test transfers real data — often 50 to 250 MB on fast connections. Keep that in mind on a metered mobile plan.

Find Out What Your Connection Can Really Do

The speed printed on your internet bill is a ceiling, not a promise. What actually reaches your laptop or phone depends on your router, the walls between you and it, the number of devices sharing the line, and how busy your provider's network is right now. This test measures that real number: it moves genuine data between your browser and a nearby server and reports download speed, upload speed, ping, and jitter. Run it before an important video call, after moving your router, or whenever the internet feels slower than what you pay for.

Why Use This Speed Test?

All Four Numbers That Matter

Download and upload speed tell you about capacity. Ping and jitter tell you about responsiveness — the part that decides how gaming and video calls feel.

A Nearby Server, Not a Distant One

The test talks to the closest server on Cloudflare's global network, so distance barely skews the result and the numbers reflect your line, not the route.

Live Readings While It Runs

You watch the speed climb in real time instead of staring at a spinner. A connection that surges and then sags tells a different story than a steady one.

No App, No Sign-Up, No Tracking

Everything runs in this browser tab. The test moves disposable random bytes only — it never reads your files, and nothing continues after you leave the page.

How this Internet Speed Test works

When you press start, the test runs in three stages, all inside your browser tab. First it checks latency. The tool sends a burst of tiny requests to a nearby server on Cloudflare's network and times each round trip. The middle value becomes your ping, and the variation between trips becomes your jitter. The very first request is thrown away, because opening a fresh connection always takes a little longer than the ones that follow.

Next comes the download stage. Your browser requests files that grow from a couple of megabytes to tens of megabytes and counts the data as it streams in, chunk by chunk. Dividing bytes received by time elapsed gives your download speed, which updates live on screen. The growing sizes matter: a small file finishes before a fast connection has reached full speed, so the test keeps pulling larger ones for several seconds until the reading settles.

The upload stage works the same way in reverse. The tool builds blocks of random data in memory and sends them to the test server, measuring speed from the progress reports your browser fires as the data leaves.

Because the server sits on a content delivery network with locations in most major cities, the route is short and the result reflects your connection rather than a distant server. The test never touches your files or personal data — it only moves disposable random bytes, and everything stops the moment you leave the page.

How to use this Internet Speed Test

1

Start the test

Press start. The tool first measures ping and jitter with a quick burst of small requests to the nearest server.

2

Watch the live speeds

Download and upload each run for a few seconds while the current speed in Mbps updates live on screen.

3

Read your results

See download, upload, ping, and jitter side by side, plus a plain verdict on what your connection can handle.

Frequently Asked Questions

How accurate is a browser-based speed test?
Accurate enough to answer the questions that matter: is my connection healthy, and is it delivering roughly what I pay for. Your device, browser, and Wi-Fi all add a little overhead, so a wired desktop will usually score a few percent higher than a phone across the room. For the cleanest reading, use an ethernet cable, close downloads and video tabs, and run the test two or three times.
Why is my result lower than the speed my provider advertises?
Providers quote an "up to" speed measured at the modem over a cable. By the time the signal has crossed your router, a few walls, and a shared Wi-Fi channel, some of it is gone. Other devices on your network and busy evening hours take another slice. A result around 80 to 90 percent of the advertised speed over ethernet is normal; far less than that is worth a call to your provider.
What is a good internet speed?
The current US broadband benchmark is 100 Mbps down and 20 Mbps up. In practice, browsing needs almost nothing, an HD stream takes about 5 Mbps, a 4K stream about 25 Mbps, and video calls 3 to 5 Mbps each way. Multiply by the number of people using the line at once. Online gaming cares much more about a low, stable ping than raw bandwidth.
What do ping and jitter actually mean?
Ping is the round-trip time for a tiny message to reach the server and come back, measured in milliseconds. Jitter is how much that time varies between trips. Low ping makes games and calls feel instant; low jitter keeps them smooth. A connection with fast downloads but high jitter can still feel choppy in a video meeting.
Why is my upload so much slower than my download?
Most cable and DSL plans are asymmetric on purpose: providers assign more of the line's capacity to downloads because that is what most households use most. A 500/20 plan is common. Fiber connections are usually symmetric, so if you upload large files or stream regularly, that difference is a real reason to consider fiber.
Why do I get a different result every time I run the test?
Because the network is never in the same state twice. Background app updates, someone else streaming, Wi-Fi interference from a neighbor, and evening congestion at your provider all move the number. Run the test a few times and treat the middle result as your real speed rather than the best or worst run.
The test says my speed is fine, but the internet feels slow. Why?
Speed and responsiveness are different things. A speed test measures how wide the pipe is; slow-feeling browsing is usually latency, an overloaded router, a Wi-Fi dead zone, a slow DNS server, or one specific website having a bad day. If your numbers here look healthy but pages crawl, restart the router and test again from a different device before blaming the line.
Does it matter if I test over Wi-Fi or an ethernet cable?
A lot. Wi-Fi loses speed with every wall and metre between you and the router, and older devices cap out well below what the router can deliver. Testing over ethernet shows what enters your home; testing over Wi-Fi shows what your devices actually get. Comparing the two tells you whether to call your provider or move your router.
Which server does this test connect to?
The nearest server on Cloudflare's network, which has locations in hundreds of cities worldwide. Testing against a close server is deliberate: it keeps the route short, so the result measures your connection instead of the distance to some far-away data center. If that network is blocked — by a strict firewall or a browser extension, for example — the test automatically falls back to this website's own server and says so under your result.
Will the test eat into my mobile data allowance?
Yes — it moves real data, and faster connections move more of it. A full run commonly transfers between 50 and 250 MB. On an unlimited or home plan that is nothing; on a small prepaid data package it is worth knowing before you tap start.
Does a VPN change my results?
Almost always, yes. A VPN encrypts everything and routes it through its own server first, which adds latency and often caps throughput below what your line can do. To measure your actual connection, switch the VPN off; to measure what your connection is like through the VPN, leave it on. Both are legitimate tests — just know which one you are running.
What can I do if my speed is genuinely bad?
Work from cheap to expensive: restart the modem and router, move the router off the floor and away from metal and microwaves, switch congested devices to the 5 GHz band or a cable, and check for devices quietly syncing or streaming. If a wired test still comes in far below your plan at quiet hours, gather a few dated results and take them to your provider.

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