Byte Converter
Convert between Bytes, KB, MB, GB, TB, and PB. Enter a value in any unit — all other units update instantly. Useful for file sizes, memory allocation, and bandwidth estimation.
Conversion Reference:
1 KB = 1,024 Bytes (binary) / 1,000 Bytes (SI) — This tool uses binary (1024-based) conversion, the standard for memory and file sizes.
1 KB = 1,024 Bytes (binary) / 1,000 Bytes (SI) — This tool uses binary (1024-based) conversion, the standard for memory and file sizes.
Bytes, Binary, and Decimal
Storage sizes are expressed in two ways: binary units like KiB, MiB, and GiB use multiples of 1024, while decimal units like KB, MB, and GB use multiples of 1000. The difference is small for single files but grows quickly with drives, backups, and cloud storage bills. This converter handles both systems.
When It Helps
- Comparing a file size reported by the OS with a limit in an upload form
- Estimating storage for logs, images, or backups
- Converting bandwidth figures between MB and MiB
Why do my file sizes look different?
Operating systems, browsers, and cloud providers do not all use the same base. Check whether the unit is KB/MB or KiB/MiB before comparing numbers.