Mutual fund calculator helps you estimate the potential returns on your investments, whether you're making a lump sum or SIP investment. With this tool, you can quickly determine the capital gains and maturity amount of your mutual fund investments. Mutual fund calculators are online tools that can calculate estimated returns for you with some minimal data points such as - investment amount, tenure, and rate of interest. Mutual Fund Calculator - Calculate your returns on mutual fund investment with mutual fund lump sum return calculator . It helps to calculate investment amount for achieving the desired goals. A mutual fund calculator is a financial tool that helps estimate returns on your mutual fund investments. It uses inputs like investment amount, expected return rate, and time period to calculate future value using compound interest formula.