Use these free financial calculators to compare everyday money decisions involving saving, investing, fees, income, and long-term growth. Each tool shows the numbers clearly and is paired with practical guidance so you can understand what the result means—not just produce an answer.
Choose the right calculator
Start with the question you are trying to answer. Use a growth calculator when you want to estimate how money may compound over time, a cost calculator when you want to measure fees or purchase prices, and an income calculator when you want to estimate dividends or yield. Results are estimates for educational use, so review the assumptions before making a financial decision.
Stocks
- Average Cost Basis Calculator — combine purchases made at different prices and find the average cost per share.
- Dividend Yield Calculator — compare annual dividend income with the current share price.
- Stock Profit/Loss Calculator — estimate dollar and percentage gains or losses after a sale.
Need help interpreting the numbers? Read What Is Average Cost Basis? for a step-by-step explanation.
ETFs and investment fees
- ETF Expense Ratio Impact Calculator — see how a small annual fee can reduce long-term growth.
- ETF Return Calculator — estimate total return from price changes and distributions.
- Dividend Income Calculator — estimate monthly and annual dividend income from an investment.
For context before comparing funds, see What Is an Expense Ratio? and ETF vs. Mutual Fund.
Growth, saving, and returns
- Compound Interest Calculator — project how an initial balance and regular contributions may grow.
- CAGR Calculator — convert total growth over several years into an annualized rate.
- DCA Calculator — model recurring investments made over time.
- Inflation-Adjusted Return Calculator — compare nominal growth with real purchasing-power growth.
To understand the math behind these tools, continue with Simple Interest vs. Compound Interest or Nominal Return vs. Real Return.
How to use the results
- Enter realistic values rather than a best-case estimate.
- Try more than one scenario to see which assumptions matter most.
- Compare percentages and dollar amounts together.
- Remember that taxes, market changes, and transaction costs may affect actual results.
These calculators are educational tools and do not provide individualized financial, tax, or investment advice. Explore the Learn library for practical examples and plain-language explanations of the formulas.