Speed, Jitter and Latency Test

This speed test measures your real download speed, upload speed, latency and jitter - the numbers that actually determine whether a video call holds up. It runs a live measurement against Cloudflare's global network directly from your browser; Meetrix's own servers are never part of the test.

Why use this test

How to run a speed, jitter and latency test

1. Click Start Test. The test runs in three short stages - latency, download, then upload.
2. Watch latency get measured. A handful of quick round-trips measure how long a request takes to come back, and how much that varies.
3. Watch download speed get measured. A file streams in and the live Mbps reading updates as it arrives.
4. Watch upload speed get measured. Data is sent out in chunks the same way, with a live Mbps reading.
5. Read the result. See download, upload, latency and jitter together, plus a plain-language read on whether it's enough for video calls.

Common speed test problems and questions

• The result seems too low for my plan: wifi signal, distance from the router, and other devices sharing the connection all reduce real-world speed below the advertised maximum. Try testing over a wired connection to isolate whether wifi is the issue.
• The result seems too high or too good to be true: some ISPs and routers prioritize traffic to well-known fast networks like Cloudflare's, which can make results run a little optimistic compared to slower or more distant destinations you actually use day to day.
• Latency looks fine but calls still lag: check jitter - inconsistent latency causes choppiness that a single low latency number won't show. Also check whether anything else on the network is uploading heavily, which mainly eats into upload capacity.
• The test won't finish or times out: a very slow or unstable connection can cause the download or upload stage to time out before finishing. That's itself a meaningful result - it suggests the connection is struggling.
• Results vary a lot between runs: that's normal on wifi or congested networks. Run it three or four times at different points and look at the typical result rather than any single one.
• Upload is much lower than download: that's expected on most home internet plans, which are built around downloading far more than uploading. It matters most for how well your own video comes across to others on a call.

Good numbers here but a call still not working right? Check individual devices with the webcam test or mic test, run the full pre-call check, or see whether a specific call's requirements fit your connection with the bandwidth calculator. If a firewall or NAT might be blocking the connection rather than bandwidth being the issue, try the WebRTC ICE tester. You can also browse all Meetrix features.