Investor toolkit
Stock Average Calculator
Find the weighted average cost of two stock purchases.
All calculators
Average cost per share: $46.67. Total cost basis: $7,000.00
Estimated results
- Average cost per share
- $46.67
- Weighted purchase price across both lots.
- Total cost basis
- $7,000.00
- Combined cost of the two purchases before fees.
For educational estimates only. Results are not investment, legal, or tax advice.
Visualize the estimate
Purchase price comparison
Compare each lot’s price with the weighted average cost per share.
- Price per share
The weighted average is $46.67 across 150 shares.
The weighted average is $46.67 across 150 shares.
View chart data
| Purchase | Price per share |
|---|---|
| First purchase | $50.00 |
| Second purchase | $40.00 |
| Weighted average | $46.67 |
Understand the estimate
What this calculator tells you
The weighted average reflects the size of each purchase, so the larger lot has more influence on the result.
Formula and assumptions
Formula: Average cost per share = total cost of both purchases ÷ total shares purchased.
Assumptions
- Both purchases represent the same stock and currency.
- Fees, commissions, stock splits, and sales are excluded.
