How to use it
- Enter the loan amount you plan to borrow.
- Input the annual interest rate as a percentage.
- Set the loan term in years and hit calculate.
What it does – You enter the loan amount, the annual interest rate and the term in years. The tool instantly returns three numbers: 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 payment helps you budget, while total interest shows the cost of borrowing and the overall payment figure lets you compare loan offers. How to read it – The monthly payment is the amount due each month. Total interest is the extra money over the principal. The total of payments is simply principal + total interest. Use these figures to decide if a loan fits your financial plan before you sign any paperwork.
Pro tips
- Round the monthly payment to the nearest dollar for quick budgeting.
- Add a 1‑2% buffer to the interest rate to account for future rate changes.
- Enter the term in whole years; most lenders quote in years, not months.
- Double‑check that the rate is entered as an annual percentage, not a monthly one.
Real-life examples
- First‑time homebuyer comparing a 30‑year fixed loan to a 15‑year option.
- Refinancing homeowner evaluating how much interest they’ll save with a lower rate.
- Real‑estate investor calculating cash flow for a rental property loan.
Case study
Maria entered a $250,000 loan at 4.5% for 30 years, saw a $1,267 monthly payment, $207,000 total interest and $457,000 total cost, then chose a shorter term that cut her interest by $45,000.