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Cloud Latency Test

Measure the round trip from your browser to 36 regions of four cloud providers, and see which one answers fastest from where you are.

Your browser connects directly to each provider's public test server, which sees your IP address like any website. The results stay in your browser.

What this test measures

Latency is the time a request takes to reach a server and come back. It depends mostly on distance and on the route your provider's network takes, and it is the number that decides how responsive an application feels. Cloud providers publish maps of their regions, but only a measurement from where you actually are tells you which region answers fastest. This test runs in your browser against each provider's own public test endpoint, so it measures your real connection, Wi-Fi and internet provider included.

Under 50 ms feels instant in an interactive application. From 50 to 100 ms is comfortable for most websites and APIs. Above 150 ms, people notice the delay in real-time uses such as games and calls. When two regions in the same city give very different numbers, the difference is the route, not the distance: trace the route to both to see where the paths split.

Frequently asked questions

Why is the result different from a ping?
A ping sends a small ICMP packet that servers answer at the network level. A browser cannot send ICMP, so this test times an HTTPS request on a connection that is already open. That includes a little processing at both ends, usually a few milliseconds. The ranking between regions is what matters, and it follows a ping closely.
Which cloud region should I choose?
The region closest to most of your users, not to you. Run this test from where your users are, or trace from our 35 measurement locations. If your users are spread across continents, one region is rarely enough.
Why is Hetzner not in the test?
A page served over HTTPS can only time requests to servers that also answer over HTTPS. Hetzner's public speed-test servers only accept plain HTTP, so the browser refuses to contact them from this page. Our server-side measurements include Hetzner.
Are my results sent to TraceMapper?
No. The requests go straight from your browser to each provider and the results are only shown on this page. We count that a test was started, without its results and without your IP address.

Related tools

Go further

Network glossary: Latency / latence, Anycast, Peering

Run a visual traceroute to this host