Bit to Byte to Yottabyte...

A bit (short for binary digit) is the smallest unit of data in a computer. A bit has a single binary value, either 0 or 1. Although computers usually provide instructions that can test and manipulate bits, they generally are designed to store data and execute instructions in bit multiples called bytes. In most computer systems, there are eight bits in a byte.


A bit is short for binary digit and is a single unit of information that can have a value of either 0 or 1 (off or on, false or true, low or high). Eight bits make a byte, as shown in the picture.

Byte is 8 bits.

1 character, for example the letter "a" is one byte.


Kilobyte (KB) is Kilobyte is 1,024 bytes.

2 or 3 paragraphs of text.


Megabyte (MB) is 1,048,576 bytes or 1,024 Kilobytes

873 pages of plaintext (1,200 characters)

Gigabyte (GB) is 1,048,576 Kilobytes or 1,024 Megabytes.

894,784 pages of plaintext (1,200 characters)

4,473 books (200 pages or 240,000 characters)

640 web pages (with 1.6MB average file size)

341 digital pictures (with 3MB average file size)

256 MP3 audio files (with 4MB average file size)

1—650MB CD


Terabyte (TB) is1,024 Gigabytes, or 1,048,576 Megabytes.

916,259,689 pages of plaintext

4,581,298 books (200 pages or 240,000 characters)

655,360 web pages (with 1.6MB average file size)

349,525 digital pictures (with 3MB average file size)

262,144 MP3 audio files (with 4MB average file size)

1,613 650MB CD's

233 4.38GB DVD's

40 25GB Blu-ray Discs


Petabyte (PB) is1,048,576 Gigabytes, or 1,073,741,824 Megabytes.

938,249,922,368 pages of plaintext (1,200 characters)

4,691,249,611 books (200 pages)

671,088,640 web pages (with 1.6MB average file size)

357,913,941 digital pictures (with 3MB average file size)

268,435,456 MP3 audio files (with 4MB average file size)

1,651,910 650MB CD's

239,400 4.38GB DVD's

41,943 25GB Blu-ray discs
1,691,556,350 - 650MB CD's

Zettabyte (ZB) is 1,125,899,910,000,000 Megabytes.

983,826,350,597,842,752 pages of plaintext
4,919,131,752,989,213 books (200 pages)
703,687,443,750,000 web pages (with 1.6MB average file size)
375,299,970,000,000 digital pictures (with 3MB average file size)
281,474,977,500,000 MP3 audio files (with 4MB average file size)
1,732,153,707,691 650MB CD's
251,030,052,003 4.38GB DVD's
43,980,465,111 25GB Blu-ray discs


Yottabyte (YB) is 1,152,921,500,000,000,000 Megabytes.

1,007,438,183,012,190,978,921 pages of plaintext

5,037,190,915,060,954,894 books (200 pages)

720,575,937,500,000,000 web pages (with 1.6MB average file size)

384,307,166,666,666,666 digital pictures (with 3MB average file size)

288,230,375,000,000,000 MP3 audio files (with 4MB average file size)

1,773,725,384,615,384 650MB CD's

257,054,773,251,740 4.38GB DVD's

45,035,996,273,704 25GB Blu-ray discs

Is there anything bigger than a Yottabyte?

Zettabyte (ZB) is 1,125,899,910,000,000 Megabytes.

983,826,350,597,842,752 pages of plaintext
4,919,131,752,989,213 books (200 pages)
703,687,443,750,000 web pages (with 1.6MB average file size)
375,299,970,000,000 digital pictures (with 3MB average file size)
281,474,977,500,000 MP3 audio files (with 4MB average file size)
1,732,153,707,691 650MB CD's
251,030,052,003 4.38GB DVD's
43,980,465,111 25GB Blu-ray discs


Yottabyte (YB) is 1,152,921,500,000,000,000 Megabytes.

1,007,438,183,012,190,978,921 pages of plaintext

5,037,190,915,060,954,894 books (200 pages)

720,575,937,500,000,000 web pages (with 1.6MB average file size)

384,307,166,666,666,666 digital pictures (with 3MB average file size)

288,230,375,000,000,000 MP3 audio files (with 4MB average file size)

1,773,725,384,615,384 650MB CD's

257,054,773,251,740 4.38GB DVD's

45,035,996,273,704 25GB Blu-ray discs

Is there anything bigger than a Yottabyte?

As of 2015, there are no approved standard sizes for anything bigger than a Yottabyte. However, the two standards that have been proposed are the Hellabyte or Brontobyte.