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Stock Average Calculator

Average cost per share across multiple buys (averaging down or up), total shares and break-even price.

Enter values

Separate values with commas, spaces or new lines.

Separate values with commas, spaces or new lines.

Results update as you type.

Result

Average price

$109.90

Total shares
100
Total cost
$10,990.00
Unrealized P/L
$10.00
Return
0.09%

About the Stock Average Calculator

Average cost per share across multiple buys (averaging down or up), total shares and break-even price.

Also known as: average down calculator, average cost per share, average purchase price, average entry price, crypto average price, share average calculator.

How to use this calculator

  1. Enter shares bought (each purchase), price paid per share, current price (optional).
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

Average = Σ(shares × price) ÷ Σ shares

Worked example

Using the values pre-filled in the calculator above:

  • Shares bought (each purchase): 50, 30, 20
  • Price paid per share: 120, 105, 92
  • Current price (optional) = 110

the calculator returns:

  • Average price: 109.9
  • Total shares: 100
  • Total cost: 10,990
  • Unrealized P/L: 10