$ Loan Calculator

Loan Calculator

Calculate your monthly payment, total interest paid, and view the full amortization schedule.

Tool guide

How to use Loan Calculator

Loan Calculator gives you a focused way to handle one small task quickly. Calculate loan payments, total interest, and amortization. It is free to use, requires no login, and is built for quick checks when you need a practical result.

Useful for

  • Calculate monthly payments for auto loans, personal loans, student loans, or business equipment financing.
  • Analyze the amortization schedule to see how much of each payment goes to principal vs. interest.
  • Determine how making extra monthly payments reduces the loan payoff timeline and total interest cost.

Example

For example, if you finance a car for $30,000 at 6.9% interest over 60 months, the calculator will estimate your monthly payment at $593 and show that you will pay $5,558 in total interest over the 5-year term.

Good to know

Results are meant for quick planning and double-checking. For legal, tax, or financial decisions, review the numbers with a qualified professional.

How it works

The loan calculator determines fixed-rate amortized loan schedules. Using the loan principal, annual interest rate, and term (in months or years), it solves for the recurring payment required to bring the loan balance to zero. It also projects the total interest paid and maps out the payment schedule, showing the decline of the principal balance over time.

Payment = Principal x [r(1+r)^n] / [(1+r)^n - 1] where r is the monthly interest rate (annual rate / 12) and n is the total number of monthly payments.

Practical examples

  • A $10,000 personal loan at 9.0% over 36 months costs $318/month, with a total interest cost of $1,448.
  • Financing $40,000 for a business setup at 7.5% over 5 years results in a monthly payment of $801 and total interest of $8,086.
  • An auto loan of $20,000 at 5.0% over 48 months costs $461/month and $2,109 total interest.

Common mistakes

  • Focusing only on the monthly payment size: lenders can lower monthly payments by stretching the loan term (e.g. from 60 to 84 months), which significantly increases the total interest you pay over the life of the loan.
  • Overlooking prepayment penalties: some lenders charge fees if you pay off the loan early. Check your agreement to ensure there are no restrictions on making extra payments.

Questions

What is an amortization schedule?

It is a table detailing each periodic payment on an amortized loan. It shows the exact amount of interest and principal contained in each payment, along with the remaining loan balance.

How does interest compounding affect my loan?

Most personal and car loans compound monthly. This means interest is calculated on the remaining principal balance every month, so as you pay down the principal, the amount of interest you pay decreases.

Can I pay off my loan early to save interest?

Yes, for most standard personal and auto loans. Paying extra principal early reduces the outstanding balance, shortening the term and lowering the total interest paid, provided there are no prepayment penalties.