Avg Jitter
ms
0ms
Average sample-to-sample swing
Professional browser-based stability test
Jitter Test
Measure how much your latency varies from one moment to the next — the metric that decides whether calls and games feel smooth or choppy — tested live against this site's own server.
Live variation gauge
Same-origin test server
Private, browser-side history
Stability Overview
Jitter, average ping and peak variation update live while the test runs.
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One button, front and center — samples round-trip time back to back and tracks how much it swings between samples.
Peak Jitter
ms
0ms
Largest single swing
Average Ping
ms
0ms
Underlying round trip
Worst Ping
ms
0ms
Slowest sample
Stability GradeExcellent
A+
Run a test to see how stable your connection timing is.
Average PingLatency
0 ms
The baseline round-trip time jitter is measured against.
Peak JitterWorst swing
0 ms
The single largest jump between two consecutive samples.
Live Latency Trend
Round-trip time (ms) — the wobble is your jitter
Advanced connection & device details
ASNDetecting…
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IP TimezoneDetecting…
Request SchemeDetecting…
Browser Downlink EstimateNot supported by this browser
Browser RTT EstimateNot supported by this browser
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Consecutive-Sample VarianceJitter is measured between back-to-back round trips.
Own Test ServerRuns on this site, never a third party.
Built for Calls & GamingJitter matters more than raw ping for real-time apps.
Private by DefaultHistory is stored only in your browser.
Ready. Press Start Test to begin.
JITTER TEST WORKFLOW
Sample-to-Sample Variance, Measured Live
This tool times a back-to-back sequence of real round trips to this site's own server (the same same-origin endpoint the speed test and ping test use) and computes jitter as the average absolute difference between each pair of consecutive samples — the standard, RFC 3550-style definition used by most network tools, not a simulated or estimated figure. The first request of every run is discarded as connection warm-up. Peak jitter tracks the single largest swing seen, which is often what actually causes a dropped word on a call or a stutter in a game, even when the average looks fine.
Jitter Test FAQ
What is jitter?
Jitter is how much your ping varies from one sample to the next, measured in milliseconds. Two connections can share the same average ping but feel very different if one is steady and the other swings widely.
Why does jitter matter more than ping for calls and games?
Real-time audio, video and games expect data to arrive at a steady pace. High jitter causes buffering, choppy audio or rubber-banding even when average latency looks acceptable, because packets arrive unevenly spaced.
What is a good jitter value?
Under 5 ms is excellent, under 15 ms is very good for most calls and games, and above 30–50 ms variation is likely to be noticeable as choppiness or stutter.
How is jitter calculated here?
As the average absolute difference between each pair of consecutive round-trip samples — the same approach used by most professional network diagnostic tools. Peak jitter is simply the largest single difference seen in the run.
Is my data stored?
No. Samples are measured live and never written to disk. Recent results are kept only in your browser's local storage.
How is this different from the Ping Test?
The Ping Test highlights round-trip time itself; this page samples the same way but foregrounds how much that time swings between samples, which is the number that predicts call and gaming smoothness.
Test History
Jitter Test Settings
Save local historyStores your last tests only in this browser, not on our server.
Test length controls how many round trips are sampled — Quick (20), Standard (36) or Extended (64). Longer tests give a steadier jitter average and are more likely to surface an occasional large spike.