A file size is the measure of space a file takes up on a storage medium, such as a computer hard drive. File sizes can be measured in bytes (B), kilobytes (KB), megabytes (MB), gigabytes (GB), terabytes (TB), and beyond. In the picture below of files listed in Windows Explorer, the size column is sorted to show the largest file first. As shown, the first file, named “family-safety.jpg”, has a file size of 47 KB. The smallest file in this picture has a file size of 32 KB.

BIT, Exabyte, Hard drive terms, Size

  • How to determine the size of a file or folder.
  • How much is 1 byte, kilobyte, megabyte, gigabyte, etc.?
  • All questions relating to computer files and file extensions.