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For a dial-up modem, this is normally anywhere from 100 to 220ms. For a cellular link, this can be from 200 to 600 ms. For a T1, this is normally 0 to 10 ms.Īnother factor that affects the latency is the distance the data is traveling.

Data travels at (very roughly) 120,000 miles (or 192,000 kilometers) per second, or 120 miles (192 km) per ms (millisecond) over a network connection. With traceroute, we have to send the data there and back again, so roughly 1 ms of latency is added for every 60 miles (96km, although with the level of accuracy we’re using here, we should say ‘100km’) of distance between you and the target.Ĭonnecting to a web site across 1500 miles (2400 km) of distance is going to add at least 25 ms to the latency. Normally, it’s more like 75 after the data zig-zags around a bit and goes through numerous routers. This means that a DSL modem on the west coast of the United States, tracing to a server on the east coast of the United States should expect somewhere around 120 ms (depending on the route and a number of other factors, but this is a rough ballpark) – 25 ms for the DSL modem and 100 ms for the distance. Tracing across an ocean, or through a satellite link, or some other link where the distance is further will certainly impact the expected latency more. PACKET LOSSĪ packet loss less than 2% is good. However, the moment it starts edging 5%, then your internet connection speed is worrisome and something needs to be done to fix it. Internet speed test for bandwidth, ping, latency, packet loss and jitter – minimum speed for voip, gaming, browsing and live streamingįor Windows 10, Microsoft provides a “Network Speed Test” via its Store.īerkeley University of California has developed an online internet speed and diagnostic tool which works only if Java is installed in your computer or browser.