Ping Test (TCP)
Measure round trip time to any public host from our server, with four samples, best, worst and average. Free online latency test.
This check runs from our server, not from your browser, and is rate limited. Nothing you enter is stored. Private and internal addresses are refused on purpose.
What this tool is for
Measures how long it takes to open a TCP connection to a host, four times, and reports best, worst and average. This is a TCP measurement rather than ICMP: containers cannot send raw ICMP without elevated privileges, and TCP timing is closer to what a browser actually experiences anyway. This is one of the few tools here that needs a server, because the question is about the internet rather than about your data. The request is made from our server, rate limited, and nothing you enter is stored.
How to use it
- Enter a hostname or IP address.
- Read the four samples and the summary.
- Compare against your own connection to tell a slow server from a slow route.
Frequently asked questions
Why is this not the same as the ping command?
The ping command uses ICMP, which needs raw socket privileges we do not grant a web service. This opens a TCP connection instead. The numbers are slightly higher because a handshake is involved, and more representative of real traffic.
What is a good latency?
Under 50 ms feels instant, 100 ms is comfortable, above 300 ms interaction feels sluggish. Distance sets the floor: light needs about 40 ms for a London to New York round trip and nothing beats that.