By default, Speedtest.net measures your connection speed in Mbps, meaning Megabits Per Second. Mbps is the ISP industry-standard, and we use it on Speedtest.net so you can easily compare your result to your broadband plan's speed. However, we offer four different options on your settings page:y default, Speedtest.net measures your connection speed in Mbps, meaning Megabits Per Second. Mbps is the ISP industry-standard, and we use it on Speedtest.net so you can easily compare your result to your broadband plan's speed. However, we offer four different options on your settings page: