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# Connection test

Measure latency and jitter to this site with the median of several cache-busted probes, first sample discarded, alongside the browser's own connection report.

What this measures, and what it does not
The button times several small requests from your browser to this site and reports the median round trip plus jitter. It does not measure bandwidth; the speed test tool does that, and this page deliberately does not pretend to.

Latency here is the round trip from your browser to this site's server, wherever that sits; it says little about a game server or a video call to somewhere else. Jitter is the mean swing between consecutive probes, and it matters more than the median for calls: a steady 60 ms beats a jumpy 30 ms. The measured numbers come from timed fetches this tab performs; the browser's own connection type, downlink, and round-trip estimates come from the Network Information API, which Chromium exposes and most others do not, so those fields are marked Not reported rather than estimated. Nothing here measures throughput, and no probe is fired until you press the button.
OptionsTest latency

## More network tools

- [HTTP timing probe](/network/http-timing)
- [Bandwidth calculator](/network/bandwidth)
[All network tools](/network)

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Canonical HTML: https://nutter.tools/network/connection-test
Markdown version: https://nutter.tools/network/connection-test.md
Plain-text version: https://nutter.tools/network/connection-test.txt
Agent index: https://nutter.tools/llms.txt