Bytes

"640k of memory should be enough for anybody."
                                                      Bill Gates

Byte       = 1 (8 bits - usually!)

Kilobyte   = thousand bytes
             1,000 (1 KB)
             1,024 (1 KiB)
             2^10

Megabyte   = million bytes
             1,000,000 (1 MB)
             1,048,576 (1 MiB)
             2^20

Gigabyte   = billion bytes
             1,000,000,000 (1 GB)
             1,073,741,824 (1 GiB)
             2^30

Terabyte   = trillion bytes
             1,000,000,000,000 (1 TB)
             1,099,511,627,776 (1 TiB)
             2^40

Petabyte   = (quadrillion bytes)
             1,000,000,000,000,000  (1 PB)
             1,125,899,906,842,624 (1 PiB)
             2^50

Exabyte    = (quintillion bytes)
             1,000,000,000,000,000,000 (1 EB)
             1,152,921,504,606,846,976 (1 EiB)
             2^60

Zettabyte  = (sextillion bytes)
             1,000,000,000,000,000,000,000 (1 ZB)
             1,180,591,620,717,411,303,424 (1 ZiB)
             2^70

Yottabyte  = septillion bytes
             1,000,000,000,000,000,000,000,000 (1 YB)
             1,208,925,819,614,629,174,706,176 (1 YiB)
             2^80

Brontobyte = octillion bytes
             1,000,000,000,000,000,000,000,000,000 (1 BB)
             1,237,940,039,285,380,274,899,124,224 (1 BiB)
             2^90

Gazzabyte  = nonillion bytes
             1,000,000,000,000,000,000,000,000,000,000 (1 AB)
             1,267,650,600,228,229,401,496,703,205,376 (1 AiB)
             2^100