Is bufferbloat causing issues with your internet connection? Want to measure your Internet speed? Run this test

Run a free bufferbloat speed test in seconds. Measure download, upload, latency, jitter, and packet loss, then get clear fixes for lag spikes and unstable gaming.

An open-source browser-based bufferbloat test for measuring internet reliability, latency / ping under load, and connection quality beyond Mbps.

Run a free bufferbloat test to measure latency under load, jitter, upload lag, and real-world network responsiveness for gaming and video calls.

Run an open-source bufferbloat test to see whether your internet connection stays reliable when download and upload traffic are active.

Check your network performance with our Internet speed test. Powered by Cloudflare's global edge network.

By testing for buffer bloat, which measures the delay caused by overfilled network buffers during heavy usage, you can identify issues that lead to high latency and jitter, affecting real-time applications like …

Free bufferbloat test. Measures how much your latency increases when your connection is busy, using a UDP-based probe for accuracy. Get a grade from A+ to F plus your RPM score.

Click below to start running the test.

Flent is a suite of tests we developed to diagnose bufferbloat and other connectivity problems. Because Flent has been tested to 40GigE, you can get a good feel for how the connection behaves while you …