Understand bandwidth, Mbps, ping and jitter.

Download speed (Mbps)

Download measures how quickly data moves from a server to your device. It matters for video streaming, large file downloads and opening data-heavy pages. Mbps means megabits per second. It is not the same as MB/s (megabytes per second): 8 bits equal 1 byte. For example, 80 Mbps is about 10 MB/s before protocol overhead.

Upload speed (Mbps)

Upload measures how quickly you send data to a server. It is important for cloud backups, file sharing, live broadcasts and your outgoing camera feed during video calls. Many home connections have different upload and download limits.

Ping (ms)

Ping is the round-trip response time; smaller values generally mean a more responsive connection. Low latency matters for gaming and interactive calls, even when download speed is high. This site's browser test uses HTTP requests to estimate responsiveness, not ICMP ping, so results can include web-server and browser processing time.

Jitter (ms)

Jitter is the variation between response times. A connection can have decent average ping but noticeable instability if latency fluctuates sharply. This is especially relevant to live audio, online games and video calls.

Failed requests versus packet loss

Packet loss normally refers to network packets that fail to reach their destination. A browser cannot directly count all low-level packet loss. On this site, the field labeled “Request failure” estimates how many HTTP ping requests failed during the sample. Treat it as a warning signal, not a definitive packet-loss diagnosis.

Why can results differ?

Browser workload, the distance to the test server, WiFi interference, VPNs, shared devices, time of day and available server capacity can influence results. Speed tests use real data transfers, so they consume bandwidth. For a fair comparison, use the same device and network conditions and repeat the test.

What speed do I need?

There is no single perfect speed: a lone device browsing websites needs far less bandwidth than a household streaming on several screens at once. Also consider stability and upload capacity. The activity indicators on the test page are approximate thresholds, not guarantees that a specific provider or streaming resolution will work.