Mortgage Calculator
A mortgage calculator helps home buyers understand the true cost of a home loan. It calculates monthly payments including principal and interest, shows total interest paid over the loan life, and generates a complete amortization schedule. Buying a home is the largest financial decision most people make, and understanding the numbers helps you choose the right mortgage for your situation. Compare different loan amounts, interest rates, and terms to find what fits your budget. How the Mortgage Calculator works: The mortgage calculator uses standard amortization formulas to compute monthly payments based on loan amount, interest rate, and term length. It generates a full amortization schedule showing each payment split between principal and interest over 15 or 30 years. The calculator also shows total interest paid over the full loan term, helping you understand the true cost of borrowing. Additional payments can be factored in to show how extra principal payments reduce total interest and shorten the loan term. Everyday use cases: Determining what price home you can afford based on monthly payment. Comparing 15-year versus 30-year mortgage options. Understanding how down payment size affects monthly payments. Planning for closing costs and additional home buying expenses. Evaluating refinancing opportunities when rates change. Calculating how extra payments accelerate equity building. Comparing fixed-rate versus adjustable-rate mortgage scenarios. Tips for accurate results: A 20% down payment eliminates the need for private mortgage insurance, saving hundreds per month. Your monthly payment should not exceed 28% of your gross monthly income. Property taxes and insurance add significantly to your monthly housing cost. Consider getting pre-approved before house hunting to understand your budget. A lower interest rate can save tens of thousands over the life of a 30-year mortgage. Common questions: How much down payment do I need? A 20% down payment is standard to avoid private mortgage insurance (PMI). However, some loan programs allow as little as 3-5% down. Should I choose a 15-year or 30-year mortgage? A 30-year mortgage has lower monthly payments but higher total interest. A 15-year mortgage has higher payments but saves significantly on total interest over the loan life. The Mortgage Calculator is one of 64 free finance calculators on CalcKit; the Finance category covers loans, mortgages, investing, tax calculators. How to use it: enter your values into the Mortgage Calculator above and the result updates instantly as you type, with no button to press and nothing to install. It is one of 64 free tools in the Finance category on CalcKit, alongside Loan Calculator, Compound Interest Calculator, Tip Calculator. Because the calculation runs entirely on your device, your inputs stay private, and the formula notes on this page let you verify every result by hand.