Stock Average Cost Calculator

Calculate the average cost basis of multiple stock purchases.

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Average Cost

Enter up to 5 purchases with shares and price.

Average cost per share
$0
Total shares: 0
Total shares
0
Total invested
$0
Average cost per share
$0
Current value
$0
Total gain / loss
$0
Return %
0%

Worked example

With the default inputs shown below, this calculator returns the following results:

InputValue
Purchase 1 β€” shares100
Purchase 2 β€” shares50
Purchase 3 β€” shares0
Current price ($)$70
ResultValue
Average cost per share$53.33
Total shares150
Total invested$8,000.00
Current value$10,500.00
Total gain / loss+$2,500.00
Return %+31.25%

Values shown are produced by this page in your browser; change any input to update them.

How to use the Average Cost

  1. Purchase 1 β€” shares β€” default 100
  2. Purchase 2 β€” shares β€” default 50
  3. Purchase 3 β€” shares β€” default 0
  4. Current price ($) β€” default $70
  5. Press Calculate to update the results instantly.

Frequently asked questions

Sources & references