1 bit – 1b 1byte – 1B = 8b 1kilobyte – 1kB = 210B (1024B) 1megabyte – 1MB = 220B (1024 * 1024B) 1gigabyte – 1GB = 230B (1024 * 1024 * 1024B) 1terabyte – 1TB = 240B (1024 * 1024 * 1024 * 1024B)