Average Monthly Car Payment Calculator



Calculating the average monthly car payment is a crucial step in managing your finances when purchasing a vehicle. To simplify this process, we’ll guide you through creating a user-friendly calculator using HTML and JavaScript. This calculator will help you determine your monthly car payment based on the loan amount, interest rate, and loan term.

How to Use

  1. Input the loan amount in dollars.
  2. Enter the annual interest rate as a percentage.
  3. Specify the loan term in years.
  4. Click the “Calculate” button to get the average monthly car payment.


The formula to calculate the average monthly car payment is:


  • is the monthly payment,
  • is the loan amount,
  • is the monthly interest rate (annual rate divided by 12 and converted to a decimal),
  • is the total number of payments (loan term multiplied by 12).


Let’s consider a car loan of $25,000 with an annual interest rate of 5% for a term of 5 years.


Q: Can I use this calculator for any currency?
A: Yes, as long as you input the loan amount in the same currency you wish to receive the result.

Q: Is the interest rate input in annual or monthly terms?
A: Input the annual interest rate, and the calculator will convert it to a monthly rate for calculations.

Q: Why is the result not in currency format?
A: The result is presented as a numeric value; you can format it as needed based on your local currency.


This calculator provides a simple yet effective way to estimate your average monthly car payment. By understanding the formula and using the provided code, you can make informed financial decisions when planning to purchase a vehicle.

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