SIP Calculator or Systematic Investment Plan Calculator allows you to calculate the estimate amount you may accumulate by investing regularly in a predefined frequency over a certain period of time as defined by you.You enter the amount in the SIP Calculator you are comfortable in investing,select the time period over which you will be contributing the installments.You can calculate for any Rate of Interest.Usually Mutual Fund Schemes are able to generate Interest above 12% if you keep your investment horizon longer then 5-8 years.In this way you will have an idea about the corpus your may accumulate.