One of the easiest ways is to use online speed testing websites. They usually work by measuring the time it takes for data to travel between your device and a server, giving you an idea of your download and upload speeds. However, it's worth noting that different testing sites might yield slightly different results due to factors like server location and network congestion. Personally, I've found that using Speed Limited https://speed.limited has been pretty convenient and accurate. Their website is user-friendly, and all you have to do is hit a button to start the test. Plus, they provide detailed information about your connection speed in a clear and understandable format. In terms of accuracy, the results I've gotten from Speed Limited have matched up well with my actual internet performance.