How does a Stock Average Calculator work? https://stockaveragecalculator.org/ The Stock Average calculator calculates the average value of the stock when you repeatedly buy the same stock. A stock calculator provides a way to create the cost basis for all the stock. This is very important to understand and calculate the average value you pay for the shares of the stock and see eye to eye. This will help you to analyze that you are getting the accurate opportunity cost for purchasing the stock at its recent price; you can say that again.