Test your connection fast with Xfinity’s internet speed test tool and get tips on how to improve your internet performance.

Test your internet speed on any device with Speedtest by Ookla, available for free on desktop and mobile apps.

Our speed test starts by measuring your connection’s latency. To do this, it sends a small amount of data from your device to the nearest test server and measures how long it takes to receive a …

To use the Xfinity Speed Test, go to speedtest.xfinity.com using your desktop or handheld device’s browser and select Start Test. The Xfinity Speed Test is also available in the Xfinity …

Jun 24, 2025 · To use the Xfinity Speed Test, go to speedtest.xfinity.com using your desktop or handheld device’s browser and select Start Test. The Xfinity Speed Test is also available in …

Use our Xfinity speed test to measure your download speed, upload speed, and ping (latency) in real time. Whether you’re gaming, streaming, or working from home, knowing your actual …

Xfinity Internet Speed Test checks how fast is your internet speed. Simply press 'GO' and Speed.is will test download, upload, ping, and jitter speed.

Test your internet connection speed with M-Lab's measurement infrastructure. Get accurate download, upload speeds and latency measurements.

Tips and Tools for understanding your speed test results related to your device and plan, and how to improve your speed and resolve wifi issues.