Stock Average Cost Basis Calculator

Blend two stock purchases into a single average cost per share. Useful when averaging down (or up) to see your new break-even price across both lots.

Financial Disclaimer

This calculator is for educational purposes only and does not constitute financial advice. Results are estimates based on the inputs provided. Consult a qualified financial advisor before making investment or financial planning decisions.

Inputs

First purchase — shares

First purchase — price/share

Second purchase — shares

Second purchase — price/share

Tab to move between fields

Results

Average cost/share

$40.00

≈ 8 cups of coffee

Total shares200

Total invested$8,000.00

How to Use This Calculator

Enter the share count and price of your first purchase.
Enter the share count and price of your second purchase.
The average cost is your blended break-even price across both lots.

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