A SIP calculator estimates what a fixed monthly investment could grow to over a period, for an annual return you assume. It shows the total you invest and the estimated gain.

Each monthly instalment is assumed to grow at the monthly equivalent of your expected annual return, and the instalments are added up. The result is an estimate, because real mutual fund returns change with the market.

It depends on the time and return you assume. A longer period needs a smaller monthly amount. Use the SIP Need calculator to find the amount for your own target.