An Investment Calculator is a financial tool designed to help individuals estimate the potential returns on their investments over time. By inputting variables such as the initial investment amount, expected annual return rate, and investment duration, users can visualize how their money may grow. This tool is useful for both novice and experienced investors looking to plan for future financial goals. These calculators often include features like compound interest calculations, which show how interest earned can be reinvested to generate additional earnings. Many financial websites and mobile apps offer free access to these calculators, making it easy for anyone to assess their investment strategies.