Speed Test
Latency Checker
Check your connection's round-trip latency to major DNS resolvers, or time a request to your own site.
An HTTPS round trip, not a real ping (browsers can't send ICMP). Results vary, and some sites block the check entirely.
This check is sent to Cloudflare, Google, Quad9, OpenDNS, and NextDNS, whichever ones you're timing.
Learn about latency and ping
What latency actually measures
Latency is the round-trip time (RTT) for a packet to travel from your browser to a server and back, measured in milliseconds. It's a completely different measurement from the throughput a speed test reports. A connection can have huge bandwidth and still feel sluggish if latency is high, because latency governs how quickly a request gets a first response, not how much data can move once it starts.
Reading your results
Roughly speaking, under 20ms is excellent and typical of a nearby edge server. 20-60ms is normal for broadband to a resolver in the same country or region. 60-150ms is typical for cross-country or transatlantic routes. Anything well above 150ms usually points to satellite internet, a badly congested path, or a genuinely distant server. Just as important as the raw number is jitter, how much latency varies between requests. Stable 80ms latency feels fine for a video call, but latency that jumps between 30ms and 300ms will cause visible stutter even though the average looks similar.
Common questions
Why does latency to my own site differ from how fast it feels to load? This tool times the raw network round-trip only. It doesn't account for how long your site's server takes to build the page, or how long the browser takes to download and render everything on it. Low network latency with a slow-feeling site usually points to server or page-weight issues, not the network.
Why do different resolvers show different latency? Providers like Cloudflare, Google, and Quad9 all use anycast routing, which sends your request to whichever of their global points of presence is network-closest to you, and that's not necessarily the same one for every provider. Differences of a few milliseconds between them are normal.
Is lower latency always better? For anything interactive, like calls, gaming, remote desktops, or page navigation, yes. For a large one-off file download, bandwidth (see the Speed Test) matters more than shaving a few milliseconds off latency.