Stock Average Calculator
Result
Stock Average Calculator The Stock Average Calculator finds your average purchase price across two buys of the same stock, weighting by the number of shares. Enter the shares and price for each purchase. — free online calculator.
Formula
- Stock weighted average purchase price calculator. This page explains the calculator's stated mathematical relationship and includes a worked example.
- The main inputs are Shares — purchase 1, Price — purchase 1, Shares — purchase 2, Price — purchase 2. Enter them in the units and format shown in the calculator.
- Use monetary amounts, rates and time periods exactly as labeled; the result reflects the assumptions entered on this page.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Stock Average
- Shares — purchase 1: 100
- Price — purchase 1: 10
- Shares — purchase 2: 50
- Price — purchase 2: 14
Buying 10 shares at 20 and 20 shares at 25 gives an average price of 23.33.
Sample result: Calculating…
Frequently asked questions
What does the Stock Average calculate?
This purchase-price average excludes commissions, taxes, dividends, and later sales.
Which values should I enter?
Enter Shares — purchase 1, Price — purchase 1, Shares — purchase 2, Price — purchase 2 using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: Average price = Total purchase cost ÷ Total shares.
Why might my result differ from another source?
Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.