Today S Fha Mortgage Rates Calculate Interest Rate On Mortgage House Interest Rates Calculator Our free mortgage calculator helps you estimate monthly payments. Account for interest rates and break down payments in an easy to use amortization schedule. You can also call 877-412-4618 to.Latest Mortgage Rate analysis. mortgage rates turned up a little bit this week, climbing off of recent lows. freddie mac reported that the averaged offered rate for a conforming 30-year fixed-rate mortgage was increased by six basis points (0.06%), rising to 4.41%, the same rate at which it began February.