Comparing Mortgage Terms Estimate the total cost in today's dollars of various mortgage alternatives. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Share | Related Content Suddenly Single: 3 Steps to Take Now Have you found yourself suddenly single? Here are 3 steps to take right now. Should You Choose a Fixed or Variable? When selecting a mortgage, one of the most critical choices is between a fixed or variable interest-rate mortgage. Should I Pay Off Debt or Invest? This calculator will help determine whether you should invest funds or pay down debt.