Investment calculators are online tools designed to help individuals estimate the potential returns on their investments. They allow users to input various parameters, such as initial investment amount, expected annual return rate, and investment duration. By doing so, these calculators provide a clear picture of how much money one could accumulate over time. These calculators can also assist in planning for retirement or saving for specific goals, like buying a home or funding education. By visualizing different scenarios, users can make informed decisions about their financial strategies and better understand the impact of compound interest on their investments.