The gigabyte (GB) equals 1,024 megabytes or roughly 1.07 billion bytes, representing the standard measurement for storage capacity on phones, laptops, and USB drives. A typical HD movie requires 2 to 4 GB of space, and most mobile data plans are measured in gigabytes per month. It bridges the gap between everyday file sizes and large-scale data storage.

The megabit (Mbit) equals 1,000 kilobits or one million bits, most commonly seen in internet speed ratings where ISPs advertise plans in megabits per second (Mbps). It is important to distinguish megabits from megabytes, since a 100 Mbps connection delivers roughly 12.5 megabytes per second of actual download speed. This unit is essential for comparing and understanding network performance.