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What does M and MM stand for?

Author:
Harold Averkamp, CPA, MBA

Definition of M

The Roman numeral M is often used to indicate one thousand.

Example of M

An expense of $60,000 could be written as $60M. Internet advertisers are familiar with CPM which is the cost per thousand impressions.

The letter k is also used represent one thousand. For example, an annual salary of $60,000 might appear as $60k instead of $60M.

Definition of MM

The Roman numerals MM are used to indicate one million.

Example of MM

Sales of $3,000,000 might be written as $3MM.

I have seen one million represented by mn and also by m (both lower case).

Hence, you might see $1,400,000 expressed as $1.4 million or $1.4MM or $1.4mn or $1.4m.

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About the Author

Harold Averkamp

For the past 52 years, Harold Averkamp (CPA, MBA) has
worked as an accounting supervisor, manager, consultant, university instructor, and innovator in teaching accounting online. He is the sole author of all the materials on AccountingCoach.com.

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