What is Megabyte (MB)?

A megabyte (MB) is a unit of measurement for digital data storage that is made up of 1,000,000 bytes of data. Bytes are the original basic unit of data storage, but have since grown to include many larger measurements including kilobytes (KBs), gigabytes (GBs), and terabytes (TBs) — making use of the International System of Units (SI) measurement scale. MBs are normally used to measure data storage on a computer or computer network, or for external USB storage devices or hard drives, and other related software or hardware.