It's about as much as a MP3 Song
(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 half as much as The Complete Works of William Shakespeare
In other words, 3,000,000 octets is 0.54 times the amount of The Complete Works of William Shakespeare, and the amount of The Complete Works of William Shakespeare is 1.9 times that amount.(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 one-and-nine-tenths times as much as a Digital Photo
In other words, 3,000,000 octets is 1.9 times the amount of a Digital Photo, and the amount of a Digital Photo is 0.53 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 two times as much as a Floppy Disk (3½-in)
In other words, 3,000,000 octets is 2.0345 times the amount of a Floppy Disk (3½-in), and the amount of a Floppy Disk (3½-in) is 0.491519 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-two-hundred-fiftieth as much as a Compact Disc
In other words, 3,000,000 octets is 0.0039 times the amount of a Compact Disc, and the amount of a Compact Disc is 257.7 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.
It's about 1,000 times as much as a Page of Text
In other words, 3,000,000 octets is 1,200 times the amount of a Page of Text, and the amount of a Page of Text is 0.0008 times that amount.(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-one-thousand-five-hundredth as much as an HDTV Television Show (30 Minutes)
In other words, 3,000,000 octets is 0.00066 times the amount of an HDTV Television Show (30 Minutes), and the amount of an HDTV Television Show (30 Minutes) is 1,510 times that amount.(a.k.a. High Definition television, a.k.a. HD) (digital signal, QAM-256; 30 minutes)
Broadcast cable HDTV signals contain about 2,520,000 octets of data per second, or 4,530,000,000 octets in a thirty-minute television show. The first High Definition television broadcast was news footage from John Glenn's 1998 mission on the space shuttle Discovery.