How to use the Loan Calculator
Enter the amount borrowed, annual interest rate, and term in months. The result uses a standard fixed-payment amortization formula. Use the result as a borrowing estimate. Match the interest rate and term to the same loan scenario, and compare multiple terms or rates when evaluating affordability.
What this calculator does
Estimate a fixed monthly loan payment and total interest. It is intended to make the calculation transparent and repeatable: you provide the known values, the calculator applies the relevant relationship, and the result is shown with the units or labels used by the tool.
When this tool is useful
Use the Loan Calculator when you need a quick, repeatable check and already have the inputs requested by the page. It is useful for comparing scenarios, checking hand calculations, planning a task, or understanding how changing one input affects the result.
How the calculation works
The monthly payment is based on the standard fixed-payment amortization relationship using principal, periodic interest rate, and number of payments.
Practical example
For example, enter a $20,000 loan, the annual interest rate, and the repayment term to estimate the monthly principal-and-interest payment.
Things to keep in mind
- Payment estimates may exclude origination fees, taxes, insurance, penalties, changing rates, or lender-specific charges unless those inputs are explicitly shown.
- Quoted APR, payment schedules, and payoff rules can differ by lender and jurisdiction.
- Compare the estimate with the lender’s official disclosure before making a borrowing decision.