IsMyInternetStableTest · Diagnose · Fix

    Wi-Fi Stability Test

    The fastest way to find out whether Wi-Fi is your problem is to test it against a wired connection. Run this test on Wi-Fi, then repeat it on Ethernet, and we will compare the two.

    Test duration

    Short tests are useful for quick checks. Longer tests are better for finding intermittent problems.

    Free, no signup. Lightweight — the basic test uses only tiny requests.

    Customize: goal, connection type

    What makes this a Wi-Fi test

    Room by room

    Walk around while it runs and tap the room you are in. Each room is scored on its own, and the weakest spot in the house is called out.

    Stalls, not just averages

    A wireless link usually fails as short stalls. We count the share of seconds with a lost or very slow request, which shows what a quick average hides.

    A rhythm points to interference

    Stalls that return at a steady interval suggest something nearby switching on and off (a microwave, a neighbouring network, a device waking up) rather than random bad luck.

    Then rule Wi-Fi in or out

    Repeat on Ethernet and compare, so you know whether it is the wireless link at all.

    The Wi-Fi vs. Ethernet method

    1. Test on Wi-Fi

    Stand where the problem usually happens and run a test with "Wi-Fi" selected (30 seconds by default; choose 2 minutes for a steadier picture).

    2. Connect Ethernet

    Plug a laptop into the router with a cable and turn Wi-Fi off, so the wired path is the only one in use.

    3. Test again

    Run the same duration. The results page offers a one-click "Test on Ethernet" button after a Wi-Fi test.

    4. Compare

    We show both side by side. If only Wi-Fi shows jitter, loss and spikes, the instability appears isolated to Wi-Fi.

    What a browser can and cannot tell you about Wi-Fi

    A browser test measures what your device experiences: latency, variation, failed requests and drops. It cannot see radio interference, signal strength, channel utilisation, router hardware health or how many devices are competing for airtime. Those need router or Wi-Fi analyser tools.

    What the test does give you is evidence: if the same test is clean on Ethernet and messy on Wi-Fi, the problem is very likely in the wireless link, and you can then work through the fixes below.

    Common Wi-Fi fixes to try, in order

    Move closer or fix router placement

    Walls, floors and appliances weaken the signal. Place the router high and central, away from microwaves.

    Use 5 GHz or 6 GHz

    2.4 GHz is crowded and slower in dense areas; 5/6 GHz has more channels but shorter range.

    Change the channel

    If neighbours share your channel, switching to a less busy one can cut interference.

    Check mesh node placement

    A mesh node placed too far from the main router relays a weak signal. Place it in the middle of the weak area, not inside it.

    Restart and update

    Restart the router/access point and install firmware updates.

    Frequently asked questions

    Start the test, then walk around your home and tap the room you are in (or add your own). The test notes the time of each tap and scores each stretch separately: median latency, jitter, lost requests and stalled seconds. A room that is clearly worse than the best one is marked as the weak spot. Choose 2 or 5 minutes if you want time to visit several rooms.

    Common causes include weak signal, interference, an overloaded channel, power-saving settings on the device, or a router problem. Testing on Ethernet helps separate Wi-Fi from everything else.

    It depends on what you do. Video calls and games are more sensitive than browsing. Look at the timeline as well as the number: occasional spikes matter more than a steady 20 ms.

    No, but without it the test cannot distinguish Wi-Fi problems from router or ISP problems. It is the single most useful extra step.

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