Internet speed tests Check the upload and download speeds of your connected devices or AT&T Wi-Fi gateway. Check device speed Check the speed between your Wi-Fi® device and the internet. You can run the test through a cellular (mobile) network, a wired connection, or your local Wi-Fi. Start speed test Check Wi-Fi gateway speed

Millions of people each day use the Speedtest website and mobile apps to test their internet speed. Now, the most accurate and convenient way to test your speed lives on your Windows desktop. - Get your ping, download, and upload speeds within seconds - Troubleshoot or verify the speed you were promised - Track prior tests with detailed.