Convert file and storage sizes using explicit decimal or binary definitions, then compare every unit in the selected system.
Convert digital storage values with separate decimal SI and binary IEC modes so KB/MB/GB are not confused with KiB/MiB/GiB.
Decimal storage uses powers of 1000: one kilobyte is 1,000 bytes, one megabyte is 1,000,000 bytes and one gigabyte is 1,000,000,000 bytes.
Binary IEC units use powers of 1024: one kibibyte is 1,024 bytes, one mebibyte is 1,048,576 bytes and one gibibyte is 1,073,741,824 bytes.
Storage vendors often publish capacities with decimal units, while some operating-system interfaces have historically displayed binary quantities using decimal-looking labels.
Separating SI and IEC modes makes the unit definition explicit instead of pretending that GB and GiB are interchangeable.
Use SI for KB/MB/GB or IEC for KiB/MiB/GiB so the unit definition is explicit.
Select the source and target units and type the size you want to convert.
Read the selected conversion and the full same-system unit matrix.
Useful next steps in the same workflow.
No. 1 GB is 1,000,000,000 bytes, while 1 GiB is 1,073,741,824 bytes.
In decimal SI notation, 1 MB is 1,000,000 bytes.
1 MiB is 1,048,576 bytes.
Use decimal SI when the source uses KB, MB, GB or TB. Use binary IEC when the source explicitly uses KiB, MiB, GiB or TiB.