Investing Calculators
Investing calculators for compound interest with monthly contributions, return on investment, compound annual growth rate, and dollar-cost averaging versus lump-sum investing.
4 free investing calculators
Compound Interest CalculatorProject compound growth with initial deposit, monthly contributions, and any rate.Open calculator ROI CalculatorCalculate return on investment as a percentage plus annualized ROI when you hold for multiple years.Open calculator CAGR CalculatorCompute the compound annual growth rate between two values over any number of years, with a smoothed growth curve and total-growth context.Open calculator Dollar-Cost Averaging CalculatorSimulate investing fixed amounts on a schedule.Open calculator
Related guides
About these tools
Every investing calculator documents its formula, shows worked examples with real numbers, lists assumptions and limits, and answers common questions. Results update instantly as you type, and nothing you enter leaves your browser.
Start with the tool closest to your decision, then use the related links to test neighboring scenarios — comparing two or three paths beats trusting any single estimate.