Latency
The time data takes to travel. Lower is better.
< 50 msInternetSpeedTest.io
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Connection quality, explained.
Is your internet actually stable?
Measure packet loss, ping and jitter — the numbers that decide whether your game, call or stream feels smooth.
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01PingLatency02DownloadSpeed03UploadSpeed
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Jitter
Variation in latency. Consistency matters.
< 10 msPacket loss
Data that never arrives. Even 1% can be noticeable.
< 1%Measurements use repeated uncached requests between your browser and our test server. Packet loss is application-level request loss; browsers do not expose raw ICMP/UDP packet counters. Read the complete methodology.
Answers that make your connection easier to understand
What is a good internet speed?
For most homes, 100 Mbps download is comfortable for multiple HD streams, calls and everyday browsing. Upload speed and latency matter just as much for calls and gaming.
Why is my speed different from my plan?
Wi-Fi signal, device limits, network congestion, server distance and other users on your connection can all reduce the speed measured at a specific moment.
What do ping and jitter mean?
Ping is the round-trip delay to the test server. Jitter is how much that delay changes between samples. Lower and more consistent results are better.
Why does packet loss matter?
Packet loss means some data did not arrive in time. It can cause lag, robotic audio, frozen video and buffering even when download speed looks fast.