How to use it
- Enter loan amount.
- Enter annual interest rate.
- Enter loan term in years and click Calculate.
What it does – The calculator takes your loan amount, interest rate, and term to show three key figures: the monthly payment you’ll owe, the total interest you’ll pay over the life of the loan, and the grand total of all payments. Why it matters – Knowing the monthly amount helps you budget, while the total interest reveals the true cost of borrowing. How to read it – The monthly payment is the amount due each month. The total interest is the sum of all interest charges, and the total of payments is simply monthly payment multiplied by the number of months. Use these numbers to compare loan offers, decide on a shorter term, or plan extra payments that can shave years off your mortgage. You can also experiment with different rates or terms to see how a small change impacts your long‑term cost, giving you leverage when negotiating with lenders.
Pro tips
- Include a small buffer (e.g., 5%) for property taxes or insurance if you want a full housing cost picture.
- Round the loan amount to the nearest thousand for a quick sanity check before entering exact figures.
- Compare the total of payments, not just the monthly amount, when evaluating different term options.
- Remember that the calculator assumes a fixed rate; variable‑rate loans will differ over time.
Real-life examples
- A first‑time homebuyer wants to know if a $300k loan with a 4.5% rate fits their monthly budget.
- A homeowner is considering refinancing a 15‑year mortgage and needs to see the new monthly payment and interest savings.
- A real‑estate investor compares two properties by calculating total payment costs for different loan terms.
Case study
Sarah, a new buyer, entered a $250,000 loan at 3.8% for 30 years. The calculator showed a $1,163 monthly payment, $168,000 total interest, and $418,000 total cost. Seeing the high interest, she opted for a 15‑year term, reducing monthly payment to $1,842 but cutting total interest by $80,000, saving thousands over the loan life.