Instant digital storage unit calculator â no file needed, just type a number.
Digital storage is measured in a hierarchy of units â bytes, kilobytes (KB), megabytes (MB), and gigabytes (GB) â where each unit is 1024 times larger than the one before it, following the binary standard used by Windows, macOS, and most file managers. This calculator lets you instantly convert between any of these units.
Some storage manufacturers and certain platforms use a decimal standard instead (1000 instead of 1024), which is why a "1TB" hard drive sometimes shows less space in your operating system. This tool uses the binary (1024) standard, matching what you see in file properties on your computer.
Some tools use 1000 as the conversion factor (decimal/SI standard) instead of 1024 (binary standard), which causes small differences in displayed file size.
Yes â convert your file's MB size to KB here, then use the MB to KB Converter tool to shrink the actual image if it's too large.