Average Down Calculator

Averaging down can be an effecive stock market investing strategy when you believe the price will move higher.

Calculate your ROI by using the stock profit/loss calculator to determine your percentage rate of return.

Download Average Down Calculator as an Excel File for free.


Enter the number of shares and price per share for the first purchase and second purchase below.

1st Purchase

2nd Purchase

Results (1 of 3)

Results (2 of 3)

1st Purchase


[100 Shares X $50.00]

2nd Purchase


[100 Shares X $10.00]

Total Shares


[100 Shares + 100 Shares]

Total Cost


[$5,000.00 + $1,000.00]

Results (3 of 3)

Old Cost Basis


[$5,000.00 / 100 Shares]

New Cost Basis


[$6,000.00 / 200 Shares]

This changes the cost basis from $50.00 to $30.00 which is a difference $20.00 or 40.00%.

If the stock price recovers to the 1st purchase price of $50.00, the total value of the investment will become $10,000.00 from an initial investment of $6,000.00.

This would be a gain of $4,000.00 or 66.67%.

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