Network tools guide
Speed Test
An internet speed test estimates how quickly data travels between your device and a test server. This page explains the measurements; it does not currently run a speed test.
What does a speed test measure?
Download speed describes how quickly your connection receives data; upload speed describes how quickly it sends data. Both are commonly reported in megabits per second (Mbps). Latency, often called ping, is the time for a small message to travel to a server and back, usually measured in milliseconds.
Why can results vary?
Wi-Fi signal strength, other devices using the connection, network congestion, your internet plan, the device itself, and the distance to the test server can all affect a result. For a useful comparison, run tests under similar conditions and use a nearby server.