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Stock Average Cost Calculator

Calculate your average stock purchase price

First Purchase - Shares
First Purchase - Price ($)
Second Purchase - Shares
Second Purchase - Price ($)
Third Purchase - Shares
Third Purchase - Price ($)

Average Cost Formula

Average Cost = Total Investment / Total Shares
Total Investment = (Shares1 × Price1) + (Shares2 × Price2) + ...
Total Shares = Shares1 + Shares2 + Shares3 + ...
Total Gain/Loss = Current Value - Total Investment

Use this calculator to find your average cost per share when buying stocks at different prices.

⚠ This calculator does not account for brokerage fees or commissions. Actual results may vary.

Understanding Average Cost

Key concepts for averaging stocks:

Lowering Cost Basis

Buying more at lower prices reduces your average cost per share.

Averaging Down

Adding to a losing position at lower prices to reduce average cost.

Risk Consideration

Averaging down increases position size and risk exposure.

Break-even Point

The price at which you recover your total investment.

Example: Buy 100 shares at $50, then 50 shares at $45, then 75 shares at $55. Average cost = $49.86 per share.

Applications

Stock Investing Portfolio Management Cost Basis Tax Planning Trading

Frequently Asked Questions

What is stock average cost?▼
The average cost per share is calculated by dividing total investment amount by total shares owned across multiple purchases.
How to calculate average stock price?▼
Total Investment / Total Shares = Average Cost. Include all purchases with shares and price per share.
Should I average down on stocks?▼
Averaging down can lower your cost basis but increases risk. Consider fundamentals before adding to a losing position.
What is cost basis?▼
Cost basis is the original value of an asset for tax purposes, used to determine capital gains or losses.

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