What is the biggest byte?

The official prefixes only go as high as 1024 or 280 bytes.

1000 Multiples

Bit = 1 Binary Digit

Byte = 8 Bit

Kilobyte = 103 bytes = 1000 bytes

Megabyte = 106 bytes = 1000 kilobytes

Gigabyte = 109 bytes = 1000 megabytes

Terabyte = 1012 bytes

Petabyte = 1015 bytes

Exabyte = 1018 bytes

Zettabyte = 1021 bytes

Yottabyte = 1024 bytes

1024 Multiples

For sequential numbers based on 1024 (210) instead of 1000 :

Bit = 1 Binary Digit

Byte = 8 Bit

Kibibyte (kilo-binary-bytes) = 210 byte = 1024 bytes

Megabyte = 220 bytes = 1024 kibibytes

Gibibyte = 230 bytes = 1024 mebibytes

Tebibyte = 240 bytes

Pebibyte = 250 bytes

Exbibyte = 260 bytes

Zebibyte = 270 bytes

Yobibyte = 280 bytes