Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Cost Basis Calculator

Calculates your average cost per share across multiple stock purchases by dividing total dollars invested by total shares owned. Use it to determine your tax cost basis when selling shares bought at different prices.

Total Shares Owned (shares)

Total Amount Invested ($)

Fill in the required fields to see your result.

Investing

Stock Return Calculator

Calculate the total percentage return on a stock position by combining capital gains and dividends received. Use it to evaluate how well a specific investment has performed.

Purchase Price Per Share ($)

Current Price Per Share ($)

Number of Shares (shares)

Total Dividends Received ($)

Holding Period (years)

Fill in the required fields to see your result.

Key differences

	Cost Basis Calculator	Stock Return Calculator
Category	Investing	Investing
Inputs required	2	5
Result	Average Cost Basis ($)	Annualized Return (%)
What it does	Calculates your average cost per share across multiple stock purchases by dividing total dollars invested by total shares owned. Use it to determine your tax cost basis when selling shares bought at different prices.	Calculate the total percentage return on a stock position by combining capital gains and dividends received. Use it to evaluate how well a specific investment has performed.