Stock Average Calculator
Find your average cost per share across several purchases, with the total shares and cost.
Change the values and press Calculate to work out your own figures.
Add a row for each purchase.
Show the working
- average = Σ shares × price ÷ Σ shares
How to use it
Add a row for each purchase.
Enter amounts without commas or with them; rates are percentages (5 for 5%). Negative amounts are allowed where a sign means money paid out.
Key facts
average = Σ shares × price ÷ Σ shares
Questions
What is the average of 10 @ $105, 6 @ $112, 16 @ $107 and 12 @ $117?
$109.95 a share (44 shares, $4,838).
Formulas
average = Σ shares × price ÷ Σ shares
Sources
Limitations
- Results are estimates for planning, not offers or financial advice; lenders and banks may round, count days or time payments differently.
- Rates are nominal annual rates compounded as you choose; payments at a different frequency use the equivalent periodic rate.