Car Interest Calculator
Calculate the total interest and monthly payment for a car loan based on loan amount, interest rate, and loan term.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to Use the Car Interest Calculator
- Enter Loan Amount ($): Type the total amount you plan to borrow (e.g., 25000). Must be a positive number.
- Enter Annual Interest Rate (%): Input the yearly interest rate (e.g., 5.5). Use a decimal if needed.
- Enter Loan Term (months): Specify the loan duration in whole months (e.g., 60 for 5 years). Must be a positive integer.
- Click "Calculate": Press the button or hit Enter on any input field.
- View Results: Your Monthly Payment and Total Interest Paid appear below. A breakdown shows the loan amount, monthly rate, and number of payments.
Tip: All inputs must be positive numbers. The term must be a whole number. If you see red borders, correct the values and recalculate.
Previous Results
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Frequently Asked Questions
The monthly payment is calculated using the formula M = P * [r(1+r)^n] / [(1+r)^n - 1], where P is the loan amount, r is the monthly interest rate (annual rate divided by 12), and n is the number of months.
Total interest paid is the sum of all interest payments over the life of the loan, calculated as (monthly payment * number of months) minus the loan amount.
Yes, the formula applies to any fixed-rate amortizing loan. However, this calculator is designed with car loans in mind.
