Also, if someone presses a button outside of the textboxes, it should prevent them from entering invalid numbers. Retirement Calculator Use this calculator to estimate the amount of money you will need to save for retirement. Current Age: Age of Retirement: Expected Rate of Return: Annual Contributions: Total Amount Needed: function calculateRetirement(){ var calcForm = document.getElementById('calcForm'); var currAge = parseInt(calcForm.currAge.value); var retireAge = parseInt(calcForm.retireAge.value); var returnRate = parseFloat(calcForm.returnRate.value); var contribPerYear = parseInt(calcForm.contribPerYear.value); if (retireAge <= currAge){ alert("Retirement Age must be greater than Current Age!"); return; } var totalYears = retireAge - currAge; var totalAmount = contribPerYear * totalYears; for (var i=0; i < totalYears; i++){ totalAmount += totalAmount * (returnRate/100); } totalAmount = Math.round(totalAmount); calcForm.totalAmount.value = "$" + totalAmount; } Retirement Tools and Calculators: What You Need to Know Retirement is an important part of life, and it's important to plan for it. Retirement tools and calculators can help you make smart financial decisions for your retirement years. In this article, we'll look at what retirement tools and calculators are, how to use them, and why they are important for your retirement planning. What Are Retirement Tools and Calculators? Retirement tools and calculators are tools that help you calculate how much money you need to save and invest in order to reach your financial goals in retirement. These tools are typically web-based and are easy to use. They can help you figure out how much savings you should set aside each month, how much you need to save for retirement each year, and more. How to Use Retirement Tools and Calculators Using retirement tools and calculators is easy. All you need to do is enter some basic information regarding your financial situation, such as your income, expenses, and retirement goals. The calculator will then analyze your data and generate a retirement plan that is tailored to your needs. Why Are Retirement Tools and Calculators Important? Retirement tools and calculators are important because they can help you make smart financial decisions before you retire. By using a retirement calculator, you can figure out how much money you need to save each month or year in order to reach your retirement goals. You can also use the tool to determine how much you need to invest in order to grow your savings. Conclusion Retirement tools and calculators are invaluable tools for planning for retirement. They can help you figure out how much money you need to save each month and year in order to reach your retirement goals. They can also help you determine how much you need to invest in order to grow your savings. Retirement calculators can be a great way to get on the right track for a secure financial future.