Low jitter — under 30 ms
Higher Stability
Round-trip times stay close together from one measurement to the next. Real-time apps generally feel smooth.
Jitter Test
Jitter Test
Test your Internet connection jitter and see how stable your connection is.
- Free
- No download required
- Instant results
Jitter
—ms
Average
—ms
Minimum
—ms
Maximum
—ms
Measuring round-trip time…
Click to test your connection
We couldn’t complete the jitter test. Check your connection and try again.
Free online jitter test. No download or installation required. Results depend on the test server, your network route and conditions at the time of testing, and are not a guarantee of gaming, VoIP or streaming performance.
The Basics
What Is Jitter?
Jitter is the variation in how long each response takes, measured from one round trip to the next — not the response time itself.
Every time your device talks to a server, that round trip takes a certain amount of time — the ping, or latency. On a stable connection, that time stays close to the same value from one request to the next. On an unstable one, it swings around, even if the average looks fine. That swing is jitter.
A connection can have low ping but still feel unpredictable if jitter is high, because individual requests are arriving much later or earlier than the average would suggest.
| Sequence of round trips | What it means |
|---|---|
| 20 → 21 → 20 → 22 ms | Low jitter — steady and predictable, even though the ping itself is unremarkable. |
| 20 → 80 → 25 → 100 ms | High jitter — large swings between requests, which is felt as inconsistency. |
Reading Your Result
Is Your Jitter Good?
General guidelines, not fixed standards — what counts as fine depends on what you use the connection for.
Moderate jitter — 30–50 ms
Some Variation
Noticeable but not extreme swings between requests. May be fine for browsing, less so for sensitive real-time use.
High jitter — above 50 ms
Significant Variation
Response times swing widely. Calls, games and live streams are more likely to show the effects.
What “good” means also depends on the activity: online gaming and VoIP calls are the most sensitive to jitter, video calls and live streaming notice it somewhat less, and general browsing is largely unaffected. These ranges are general guidelines, not fixed standards — no single number guarantees a particular experience.
Related Terms
Jitter vs Ping vs Latency
Three different measurements of the same round trip.
| Term | What it measures |
|---|---|
| Jitter | The variation in latency from one round trip to the next. |
| Ping | The response time for a single round trip to a destination. See our Ping Test. |
| Latency | The time data takes to travel between two points on the network. See our Latency Test. |
A low ping does not necessarily mean low jitter, and a low average latency does not necessarily mean a stable one — a connection can respond quickly on average while still swinging widely between individual requests. Checking jitter alongside ping and latency gives a fuller picture of what a connection actually feels like to use.
Troubleshooting
Why Is My Jitter So High?
Any of these can contribute — a high result does not point to one specific cause.
- WiFi interference from other networks or electronics
- A weak WiFi signal at your location
- Network congestion on your local network or the wider route
- An overloaded or outdated router
- A busy local network with several active devices
- Congestion further along your ISP’s network
- An unstable wireless connection in general
- A long or inconsistent route to the test server
- Background downloads or uploads running during the test
Fix It
How to Reduce Jitter
None of these guarantee a specific result, but they address the most common causes.
Use a wired Ethernet connection where possible.
Move closer to your WiFi router.
Reduce WiFi interference from other networks and electronics.
Stop unnecessary downloads or uploads while testing.
Restart or update your router.
Test at different times of day to see if it changes.
Compare a WiFi result with a wired Ethernet result.
Contact your ISP if instability persists across several tests.
Why It Matters
Why Does Jitter Matter?
Jitter is not the same as bandwidth or Internet speed — a fast connection can still be a jittery one.
Gaming
Timing-sensitive games can feel inconsistent when jitter is high, with movements or hits that register late or out of order.
Video Calls
Larger swings in jitter can contribute to freezing frames or audio that briefly falls out of sync.
VoIP
Real-time voice calls depend on packets arriving at a steady pace, so stability matters as much as raw speed here.
Streaming
Buffers usually absorb some jitter, but it is a separate factor from bandwidth — not a measure of how fast your connection is.
Curious about your raw connection speed instead? Run our Internet Speed Test.
FAQ
Jitter Test FAQ
Short answers to the questions people ask most about testing and reducing jitter.
What is a jitter test?
A jitter test measures how much your network latency changes from one moment to the next. It sends a series of requests to a test server and looks at the variation between the response times, rather than a single ping value.
What is a good jitter?
As a general guideline, under 10 ms is excellent, 10–30 ms is good for most gaming and video calls, 30–50 ms is fair but noticeable, and above 50 ms is considered high. These are indicative ranges, not fixed standards, and needs vary by activity.
What does high jitter mean?
High jitter means your connection’s response time is swinging significantly between requests, even if the average looks fine. That instability is what tends to cause choppy calls, stuttering video and unpredictable lag in games.
How is jitter measured?
Jitter is calculated from a series of latency samples. This tool takes the average difference between consecutive measurements — a steady sequence produces a low number, a sequence that jumps around produces a high one.
Why is my jitter so high?
Common causes include WiFi interference, a weak wireless signal, network congestion, an overloaded router, other devices sharing the connection, or congestion further along your ISP’s network. It can also simply be a busy moment on the test route.
Is jitter important for gaming?
Yes. Online games are sensitive to timing, so a connection with low ping but high jitter can still feel inconsistent, with movements and hits that register late or out of order. Check your ping alongside jitter.
How can I reduce jitter?
Use a wired Ethernet connection where possible, move closer to your router, reduce WiFi interference, pause large downloads or uploads while testing, and restart your router. If jitter stays high across several tests, contact your ISP.
Get started
Check Your Jitter Now
Run the free jitter test above, or pair it with a ping and latency test for the full picture.