What is jitter on an internet connection?

Jitter is the variation in latency from one measurement to the next. Lower, steadier variation usually means a more consistent real-time connection.

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JITTER EXPLAINED

A stable connection can feel better than a faster but inconsistent one.

If one packet arrives quickly and the next is delayed, the variation is jitter. Games, voice chat and video calls are sensitive to those timing changes because they depend on a steady flow of small packets.

Jitter is not download speed

Mbps measures throughput. Jitter is measured in milliseconds and describes how much latency changes over time rather than how much data your connection can carry.

Gaming exposes unstable latency

Large swings in delay can show up as stutters, inconsistent hit registration or short lag spikes even when average ping looks acceptable.

Calls need packets to arrive steadily

Voice and video apps can buffer small variations, but larger swings may create choppy audio, frozen video or awkward delays in conversation.

Wi-Fi is a common source of variation

Interference, weak signal and competing devices can make wireless latency less predictable. Compare the same test over Ethernet to isolate the Wi-Fi layer.

A busy connection can increase jitter

Downloads, uploads, cloud sync and streaming can create queues. Re-test with background traffic paused to see whether local congestion is contributing.

Repeat tests instead of trusting one moment

Jitter can change by time of day and network load. Several tests on the same device are more useful than one isolated number.