It's about two times as much as a Magnetic Stripe Card.
In other words, the amount of a Magnetic Stripe Card is 0.50 times 213.840 octets.(maximum capacity; per ISO 7811 specification)
The storage capacity of a magnetic stripe on a credit or identification card is about 100 octets. According to legend, Forrest Parry, the IBM engineer who developed the first magnetic stripe card in 1960, was able to solve the problem of adhering the strip to the card after his wife suggested using an iron.
It's about one-tenth as much as a Page of Text.
In other words, the amount of a Page of Text is 11 times 213.840 octets.(50 lines, 50 characters per line, ASCII encoding)
A 50-character-per-line, 50-line page of Latin alphabet text requires 2,500 octets when digitally represented. The Google Books project, which has produced hundreds of millions of pages of digital text, used a robotic device to digitize over eight million titles at a rate of about 1,000 pages per second.
It's about one-seven-thousandth as much as a Floppy Disk (3½-in).
In other words, 213.840 octets is 0.00014502 times the amount of a Floppy Disk (3½-in), and the amount of a Floppy Disk (3½-in) is 6,895.60 times that amount.(high density, IBM PC format)
Despite common reference to them as "1.44" megabyte (mB) disks, the actual capacity of the most common model of a 3&-in (8.9 cm) floppy disk is 1,474,560 octets. At the height of their use 1996, there were an estimated five billion disks in use — nearly one for each person on Earth at the time.
It's about one-seven-thousandth as much as a Digital Photo.
In other words, 213.840 octets is 0.00014 times the amount of a Digital Photo, and the amount of a Digital Photo is 7,100 times that amount.(5.3 megapixels, JPEG compression, 100% quality, 24 bits/pixel)
A 5.3-megapixel digital camera photo requires about 1,600,000 octets of storage space. In 2010, it was expected that 90% of all professionally-taken photographs would be digital instead of film.
It's about one-fifteen-thousandth as much as a MP3 Song.
In other words, the amount of a MP3 Song is 10,000 times 213.840 octets.(a.k.a. MPEG-1 Audio Layer 3, a.k.a. MPEG-2 Audio Layer 3) (128 Kbps, "near-CD-quality"; 3 minutes duration; average)
A three-minute song of typical quality will be about 3,000,000 octets when encoded into MP3 format. The song Tom's Diner by Suzanne Vega was used by AT&T-Bell Labs engineer Karlheinz Brandenburg to test the compression process and is considered the first MP3 song.
It's about one-twenty-five-thousandth as much as The Complete Works of William Shakespeare.
In other words, the amount of The Complete Works of William Shakespeare is 26,000 times 213.840 octets.(ASCII, plain text)
The Complete Works of William Shakespeare would occupy about 5,600,000 octets when written in plain text without formatting. These works include 38 definitively-attributed plays — 11 tragedies, 17 comedies, and 10 tragedies — as well as 154 sonnets and numerous other poems.
It's about 0.0000003 times as much as a Compact Disc.
In other words, 213.840 octets is 0.00000027660 times the amount of a Compact Disc, and the amount of a Compact Disc is 3,615,000 times that amount.(80-minute, 360,000 sector disc; "Red Book" specifications)
A typical, 80-minute capacity compact disc, commonly known as a 734,000,000 octets disc will actually hold 773,100,000 octets of data. Such disks are 1.2 mm (0.047 in) thick.