How to Use Investment Return / ROI Calculator
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1. Enter Investment Balances
Enter your initial investment amount and the final value of the investment.
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2. Set the Holding Period
Enter the investment duration and select the unit — days, months, or years.
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3. Add Costs & Review Results
Optionally add transaction fees and dividends received, then review your total ROI, net profit, and annualized CAGR.
The Technical Details
This interactive web utility provides fast, reliable, and completely private data transformations. In modern workflows, quick formatting, conversions, or estimations are essential. By running all logic entirely in your browser with client-side JavaScript, this tool guarantees that your data never leaves your machine. This approach delivers maximum performance and absolute data privacy, as no information is ever sent to a server.
Frequently Asked Questions
What is the difference between ROI and CAGR?
ROI is the total percentage gain or loss over the entire holding period. CAGR (Compound Annual Growth Rate) is the annualized equivalent, useful for comparing investments held for different lengths of time.
Why should I include transaction fees and dividends?
Including fees reduces your net profit for a more accurate ROI. Dividends add to your total proceeds, reflecting the true total return on the investment.
Is my data sent to a server?
No. All calculations run locally in your browser. Your financial information is never uploaded or stored anywhere.
What does a negative ROI mean?
A negative ROI means the investment lost value — your final proceeds were less than the total cost. It quantifies how much was lost as a percentage of the original investment.