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Byte Converter

Convert between bits, bytes, KB, MB, GB, TB, and PB instantly. Supports both decimal (SI: 1 KB = 1000 bytes) and binary (IEC: 1 KiB = 1024 bytes) prefixes.

Full Conversion Table

Enter a value above to populate the table.

Unit	Value	Full name

Decimal vs Binary Prefixes

There are two standards for data size units:

Decimal (SI) — 1 KB = 1,000 bytes, 1 MB = 1,000,000 bytes. Used by hard drive manufacturers and network bandwidth specs.
Binary (IEC) — 1 KiB = 1,024 bytes, 1 MiB = 1,048,576 bytes. Used by operating systems (RAM, file sizes in Windows/Linux). This is why a 1 TB drive shows as ~931 GB in Windows.