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This ROI Calculator (Return on Investment Calculator) is a simple yet powerful tool that helps you measure the profitability of your investments. By entering the initial investment amount and the final value of your investment, the calculator instantly shows your profit or loss along with the ROI percentage. It clearly displays the difference between your starting cost and the ending value, making it easier to analyze whether your investment was successful. This calculator is ideal for business owners, investors, and individuals who want to track financial performance and make smarter investment decisions.