Editing Decimalisation (section)

== Non-currency cases ==

=== Securities ===
In the special context of quoting the prices of stocks, traded almost always in blocks of 100 or more [[Share (finance)|share]]s and usually in blocks of many thousands, stock exchanges in the United States used eighths or sixteenths of dollars, until converting to decimals between September 2000 and April 2001.<ref>{{cite web|url=https://www.sec.gov/news/testimony/ts092000.htm|title=SEC Testimony: Decimal Pricing in the Securities and Options Markets (A. Levitt)|work=sec.gov}}</ref>

Similarly, in the United Kingdom, the prices of government securities continued to be quoted in multiples of {{frac|32}} of a pound ({{frac|7|1|2}}&nbsp;d or {{frac|3|1|8}}&nbsp;p) long after the currency was decimalised.

===Metrication===
{{main|Metrication}}
The idea of measurement and currency systems where units are related by factors of ten was suggested by [[Simon Stevin]] who in 1585 first advocated the use of decimal numbers for everyday purposes.<ref>{{cite web |url=http://www.britannica.com/EBchecked/topic/565994/Simon-Stevin |title=Simon Stevin (Dutch mathematician) - Britannica Online Encyclopedia |publisher=Britannica.com |access-date=2018-10-26}}</ref> The [[Metric system]] was developed in France in the 1790s as part of the reforms introduced during the [[French Revolution]]. Its adoption was gradual, both within France and in other countries, but its use is nearly universal today. One aspect of measurement decimalisation was the introduction of [[metric prefix]]es to derive bigger and smaller sizes from base unit names. Examples include ''kilo'' for 1000, ''hecto'' for 100, ''centi'' for 1/100 and ''milli'' for 1/1000. The list of metric prefixes has expanded in modern times to encompass a wider range of measurements.

While the common [[units of time]], minute, hour, day, month and year, are not decimalised, there have been proposals for [[decimal time|decimalisation of the time of day]] and [[decimal calendar]] systems. Astronomers use a decimalised [[Julian day number]] to record and predict events. Decades, centuries, and [[millennia]] are examples of common units of time that are decimalised.<ref>{{Cite book |last=Treese |first=Steven A. |url=https://books.google.com/books?id=bi1bDwAAQBAJ&pg=PA813 |title=History and Measurement of the Base and Derived Units |date=2018-05-17 |publisher=Springer |isbn=978-3-319-77577-7 |language=en}}</ref> The [[millisecond]] is a decimalised unit of time equivalent to a thousandth of a second, and is sometimes used in computing contexts.<ref>{{Cite web |title=What is millisecond? |url=https://whatis.techtarget.com/definition/millisecond |access-date=2021-10-11 |website=WhatIs.com |language=en}}</ref><ref>{{Cite web |title=What is a Millisecond (ms or msec)? - Definition from Techopedia |url=http://www.techopedia.com/definition/2730/millisecond-ms-or-msec |access-date=2021-10-11 |website=Techopedia.com |language=en}}</ref>

The [[gradian]] or grade is an [[angular unit]] defined as one hundredth of the [[right angle]] (approximately 0.0157&nbsp;[[radian|rad]]), further divided into one hundred centigrades.

In computer science, there are several metric prefixes used with [[units of information]]. For example, a [[kilobit]] is equivalent to 1,000 [[bit]]s.<ref>{{Cite web |title=Definitions of the SI units: The binary prefixes |url=https://physics.nist.gov/cuu/Units/binary.html |access-date=2022-09-20 |website=physics.nist.gov}}</ref>

=== Representing amounts of money ===
Amounts of money are sometimes described in a decimalised way. For example, the letter K (standing for [[kilo-]]) can be used to indicate that a sum of money ought to be multiplied by 1,000 i.e. $250k means $250,000. The letters M or MM can be used to indicate that a sum of money should be multiplied by a million i.e. $3.5M means $3,500,000. The letter B similarly stands for a billion.<ref>{{Cite web |author=<!--Staff Writer--> |date=2015-08-04 |title=What Does K Mean in Money? |url=https://www.reference.com/business-finance/k-mean-money-498ebfaace06af |access-date=2022-09-20 |website=Reference.com |language=en-US}}</ref><ref>{{Cite web |date=2021-07-06 |title=Billion Abbreviation: How to Abbreviate Billion |url=https://capitalizemytitle.com/how-to-abbreviate-billion/ |access-date=2022-09-20 |website=Capitalize My Title |language=en-US}}</ref>