Average Down Calculator

Calculate the new average cost per share after buying more shares at a lower price.

isCalculator Editorial Team Published by:
Reviewed by: Review Board
Last Updated:

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How to use this tool?

This calculator helps you find the new average cost per share after buying additional shares at a different price.

  1. Enter Current Shares – The number of shares you currently hold.
  2. Enter Current Avg Price ($) – Your current average cost per share.
  3. Enter New Shares – The number of additional shares you plan to buy.
  4. Enter New Price ($) – The price per share for the new purchase.
  5. Click Calculate.

The result shows your new average cost per share after combining both positions. All values must be non-negative numbers. Total shares cannot be zero.

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Frequently Asked Questions

Averaging down is an investment strategy where you buy more shares of a stock at a lower price to reduce the average cost per share.

The new average cost is calculated by dividing the total cost of all shares (current and new) by the total number of shares.

Yes, you can use it for stocks, ETFs, mutual funds, or any asset where you buy shares at different prices.

Reviewed by Experts

Carlos Bicho

Carlos Bicho

Financial Advisor

Private Banker & Financial Advisor

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Danilson Melicio

Danilson Melicio

Financial Advisor

Financial Markets Investor

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Eurico José Kiala

Eurico José Kiala

Mathematician

Teacher

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Francisco Saramango

Francisco Saramango

Board Financial Advisor

Financial Management and Accounting, Financial management and accounting

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Juliana Mayorca

Juliana Mayorca

Financial Advisor

Board-Level Advisor

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