Video call readiness test
Calls don't freeze because of download speed. They freeze because of upload, jitter and ping spikes when the line is busy. This test checks all four and gives you a straight answer.
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Mbps
Tap Start to run the test
Press Space to start · ~25 seconds · no ads, no sign-up
Download
—Mbps
Upload
—Mbps
Ping
—ms
Jitter
—ms
Ping under load
—ms
download / upload
Bufferbloat
—
lag when busy
Consistency
—%
how steady the speed is
Packet loss
—%
Your history saved on this device only
| When | Down | Up | Ping | Loaded | Bloat | Server |
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Questions about this test
What internet speed does Zoom need?
Zoom recommends about 3–4 Mbps up and down for HD group calls; Teams and Meet are similar. Almost any plan has that. What breaks calls is jitter over ~30 ms, packet loss, and bufferbloat when someone else downloads.
Why does my video freeze while audio continues?
Video is dropped first when bandwidth or ping degrades. Check the jitter and bufferbloat grade; if they're poor, move closer to the router, use Ethernet, or enable QoS/SQM.
Should I use Ethernet for important calls?
Yes. A cable removes Wi‑Fi jitter and is the single biggest reliability upgrade for work-from-home calls.
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