# Arithmetic Average Return Calculator

This page calculates the Arithmetic Average Return for an investment, given the initial value and the value at the end of each period. Click the Help tab for full instructions on how to use this tool.

The Arithmetic Average Return Calculator is used to calculate the Arithmetic Average Return of an investment, given the initial value of the investment and the value of the investment at the end of each period.

**Initial Value** - Use this field to enter the initial value of the investment. This is the value of the investment on the day you bought it.
This value must be a positive amount.

**Value at end of period** - Use each of these fields to enter the value of the investment at the end of each period.
This value must be a positive amount.

Click the **+** button to add another period. Another field will appear on the form to allow you to enter another value.

Click the **Calculate** button to calculate the Arithmetic Average Return. The value, displayed as a percentage, will be shown below the button.

If any of the values have been entered incorrectly an error message will be displayed next to the field. Fix the error, then click **Calculate** again to perform the calculation.

Click the **Clear** button to clear all data from the form and start again.