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About ROI Calculator
Our free ROI calculator helps you measure the profitability of any investment. Return on Investment (ROI) is one of the most widely used financial metrics for evaluating investment performance. Whether you are analyzing stock returns, real estate investments, business ventures, or any other asset, this calculator gives you instant clarity on your investment gains or losses.
Features
- Calculate simple ROI percentage for any investment
- See net profit or loss in dollar terms
- Calculate annualized return to compare investments of different holding periods
- 100% client-side — your financial data never leaves your browser
What is ROI and How Is It Calculated?
ROI (Return on Investment) measures the gain or loss generated by an investment relative to its cost. The formula is: ROI = (Final Value - Investment Amount) / Investment Amount x 100. For example, if you invest $10,000 and it grows to $15,000, your ROI is 50%. However, ROI does not account for time. That is where annualized return comes in: Annualized Return = (1 + ROI/100)^(1/years) - 1. A 50% ROI over 3 years equals about 14.5% annualized, while 50% over 1 year is 50% annualized. Annualized returns allow you to fairly compare investments held for different periods.