Compound Interest Calculator : Use this compounding calculator to understand the power of compounding . We bet that after seeing the results, you'll want to start investing as soon as possible! Minify HTML code including any inline CSS and Javascript code included in your markup. Calculate how much your money can grow using the power of compound interest with this online tool. Enter your initial investment, monthly contribution, length of time, interest rate, and compound frequency, and see the results. Use our Compound Interest Calculator to estimate how your investments grow over time with compounding . Accurate, fast & tailored for Indian investors.