Abbreviations

Use the following abbreviations of time, space, and frequency measurement.

Abbr.	Unit of Measurement
b	Bit, bits (unit of data throughput; 1 binary digit)
B	Byte, bytes (unit of size or storage; 8 binary digits)
EB	Exabyte, exabytes (one binary quintillion bytes)
Kb	Kilobit, kilobits
KB, K	Kilobyte, kilobytes
Mb	Megabit, megabits
MB, Mbyte	Megabyte, megabytes (one binary million bytes)
GB, Gbyte	Gigabyte, gigabytes (one binary billion bytes)
TB	Terabyte, terabytes (one binary trillion bytes)
BB	Brontobyte, brontobytes (now petabyte, q.v.)
Hz	Hertz, one cycle per second
kHz	Kilohertz
GHz	Gigahertz
MHz	Megahertz
bps	Bits per second (not the same as baud)
Bps	Bytes per second
ms	Millisecond, milliseconds
ms	Microsecond, microseconds (one millionth of a second) *
n s	Nanosecond, nanoseconds (one billionth of a second) *
PB	Petabyte, petabytes (one binary quadrillion bytes)
ps	Picosecond, picoseconds (one trillionth of a second) *
fs	Femtosecond, femtoseconds (one quadrillionth of a second) *

* At this time (March 1998), most browsers do not support the extended HTML characters necessary to create these abbreviations. You can get around the problem by using the following HTML markup:

Abbr.	Markup
ms	<font face="symbol">m</font>s
ns	<font face="symbol">n</font>s
ps	<font face="symbol">p</font>s
fs	<font face="symbol">f</font>s

Test your HTML pages with different browser versions and on different operating systems to ensure readability.