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CAGR is a useful measure of the growth of your investment over multiple time periods, especially if the value of your investment has fluctuated widely during the time period in question.

To calculate CAGR, enter the beginning value, ending value and number of periods over which your investment has grown. Use the drop-down menu to select the length of the time period in question – weeks, months or years.

To learn more about how CAGR works, what it is and why it's so important, check out the definition in our **Financial Dictionary**. You may also be interested in these related terms: capital appreciation, compounding, average annual growth rate (AAGR) and average annual return (AAR).