Mortgage Calculator 2026
Calculator Inputs
ResultsLive Estimate
Results update automatically as you adjust inputs.
A mortgage calculator is an essential financial tool designed to help home buyers determine their prospective monthly mortgage payments. By entering key variables such as the total loan amount, the annual interest rate, and the duration of the loan term, you can instantly see how much you will pay each month in interest and principal. This calculation enables you to understand your budget and set realistic price ranges when shopping for real estate. In addition to estimating your monthly out-of-pocket costs, this tool calculates the total cost of the credit, which is the sum of all interest payments made over the life of the loan. Understanding this figure is critical because it reveals the true cost of borrowing money. Before you make one of the largest financial commitments of your life, use this simulator to test different interest rate scenarios and amortization lengths, ensuring you choose a loan structure that matches your long-term wealth goals.
🧮Methodology & Formula
Methodology & Formula
This mortgage calculator uses the standard amortization formula:
M = P [ r(1 + r)^n ] / [ (1 + r)^n - 1 ]
Where M is the monthly payment, P is the principal loan amount, r is the monthly interest rate (annual rate divided by 12 months, expressed as a decimal), and n is the total number of payments (loan term in years multiplied by 12 months). This formula determines the exact fixed monthly payment required to pay down the interest and principal over the lifetime of the loan.