About MortgageCalculatorFast.com About MortgageCalculatorFast.com Simple mortgage math. No confusion. MortgageCalculatorFast.com was built to answer one simple question: “What will my monthly mortgage payment actually be?” Buying or refinancing a home comes with a lot of numbers. Many mortgage calculators either oversimplify the math or overwhelm people with unnecessary details. This site was created to give … Continue reading About Us