Modern tests like those from Ookla's Speedtest or Fast.com dynamically adjust the amount of data sent; if your connection is very fast, the tool will send more data to ensure a high-accuracy measurement. Key Metrics to Know
Measures how fast you can pull information from the internet (e.g., streaming a movie or opening a webpage).
ELI5: How do internet speed tests work? : r/explainlikeimfive
Testing your data download speed is the most direct way to see if your internet service provider (ISP) is actually delivering what you pay for. Whether you're dealing with choppy video calls, slow file downloads, or laggy gaming, a speed test provides the hard data needed to troubleshoot your connection. How Data Download Speed Tests Work
