Test your current internet speed, and find out how fast your broadband wi-fi handles uploads and downloads. See Google Fiber plan options for faster internet. Use Speedtest on all your devices with our free desktop and mobile apps. How fast is your download speed? In seconds, FAST.com's simple Internet speed test will estimate your ISP speed. Test your Internet connection. Check your network performance with our Internet speed test. Powered by Cloudflare's global edge network. Download speed is how fast your internet connection can pull data from the internet to your device. It’s measured in megabits per second (Mbps) or gigabits per second (Gbps) and determines how quickly you can load web pages, stream video, download files, or update apps. The speed test estimates your internet download speed, delivering results in just a few seconds. The simple and fast mobile and web app is a useful tool if you consume a lot of web content, including streaming videos and downloading large files. Check your internet speed with our simple and fast speed test. Get detailed results for your download speed, upload speed, and personalized insights into your connection performance.