New Delhi [India], February 28: Planning for retirement is one of the most important financial goals in life, and a well-thought-out strategy can make all the difference in achieving it. As people look for ways to secure a comfortable retirement, Systematic Investment Plans (SIPs) have gained popularity as a disciplined and effective investment option. Using a SIP calculator is a smart way to estimate the returns on your SIP investments and can be a game-changer in mapping out your financial future.