WiFi Tester
Press start below to measure your connection right now. The test sizes itself to your speed, so it finishes quickly on slow links while still converging accurately on fast ones.
How the measurement works
The ladder starts small enough that even a 5 Mbps connection finishes quickly, then doubles the payload up to 100 MB so multi-gigabit fiber still gets a long enough transfer to converge.
Because the download is split into several measured passes, a single slow moment or network hiccup can be discarded instead of silently dragging the whole result down.
The adaptive ladder is why this test is both quick on slow links and accurate on fiber — it gives each connection exactly the data it needs.
What the numbers mean
Download speed is usually the biggest number on a result screen because most plans are asymmetric, and it is the figure most ISPs advertise most loudly.
Some jitter is normal on any connection; very high jitter (roughly 20 ms or more of variation) is what you'll notice as choppy calls or rubber-banding in games.
What affects your speed
Whether you test over Wi-Fi or Ethernet, the distance to your router, how many devices share the connection, and whether your ISP throttles specific traffic can all move the numbers.
Testing against Cloudflare's anycast network gives a realistic picture of real-world throughput because the measured path is short and well-connected.
A few final tips
This test is free, requires no account, and never shows ads while it runs — the only goal of the measurement is to give you a trustworthy number as quickly as possible.
The result screen labels the server you measured against, so you always know exactly what path a number represents before you compare it with anything else.
Run the test a few times over a few days before drawing conclusions. One-off speeds are noisy; a median of several runs is a much more reliable picture of your connection.
A few final tips
WiFi Tester is built to run on your connection in under a minute — press start, read the four numbers, and compare them with what your plan promises.
Speed test limitations
A single measurement is a snapshot. Network traffic, time of day and local congestion all shift results, which is why comparing a few runs across different days is more meaningful than any one number.
This test measures throughput to Cloudflare's edge, not to every service you use. Remote work, gaming or streaming servers may route differently and show different performance.
Related tests & guides
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