Simple Loan Rate Calculator

Need to find out the interest rate for a loan? Enter the loan amount, monthly payment amount, and the length of a loan into this calculator and it will show you the interest rate being charged. Figuring out the loan rate has never been easier with our calculator. Let’s start!

Field Help

Input Fields

Title: A title for these calculator results that will help you identify it if you have printed out several versions of the calculator.

Loan Amount: The amount you plan to borrow.

Monthly Payment: The amount of principal + interest you are currently required to pay each month toward this loan.

Length of Loan: How long you will pay on this loan? Also, choose whether ‘Length of Loan’ is years or months.

Output Fields

Interest Rate: The annual percentage rate you will pay for this loan.

What Is The Loan Rate Formula?

The loan rate formula is very simple and easy to follow, all you have to do is just follow the instructions.



  • The Interest is the amount of interest paid or earned
  • The Principal is the initial amount of money
  • The Rate is the interest rate per period
  • The Time is the time the money is borrowed or invested for, in years

Advantages Of Using A Loan Rate Calculator 

Using a loan rate calculator has a lot of benefits, let’s discuss them. 

  • Accurate Estimation: A loan rate calculator provides a precise estimate of your potential loan payments, helping you plan your budget effectively.
  • Comparison Tool: It allows you to compare different loan options by adjusting the loan amount, interest rate, and term, helping you choose the most suitable option.
  • Time-Saving: Instead of manually calculating loan rates, which can be complex, a calculator provides quick results, saving you time and effort.
  • Financial Planning: By seeing how different factors affect your loan rate, you can make informed decisions about your finances and plan for the future accordingly.
  • Budgeting Aid: Knowing your monthly payments in advance helps you budget more effectively and avoid taking on more debt than you can comfortably afford.
  • Educational Tool: It can help you understand how interest rates, loan terms, and amounts impact your overall repayment, improving your financial literacy.

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