One of the most confusing things for users is the difference between small "b" and capital "B" in speed measurements. You might buy a 100 Mega plan but see only 12.5 Mega when downloading.\n\nThe secret is in the units: Mbps stands for Mega-bits per second, while MBps stands for Mega-Bytes per second. There are 8 bits in 1 Byte.\n\nISPs advertise in "bits" because the numbers look larger and more attractive. Download managers show speed in "Bytes" because that's how file sizes are measured on your device.\n\nTo convert Mbps to MBps, simply divide by 8. An 80 Mbps speed is actually 10 MBps during a download. Understanding this will help you estimate real download times accurately.