Convertaro

Loan Calculator - Estimate Monthly Payments & Total Interest

This financial Loan Calculator provides a comprehensive estimate of your monthly debt obligations. By analyzing your principal amount, interest rate (APR), and loan term, it reveals the true cost of borrowing. It breaks down each payment into principal and interest, allowing you to see how your money is allocated over the lifetime of the loan, helping you make smarter borrowing decisions.

Loan Details

Total amount you wish to borrow

The yearly interest rate for this loan

Duration of the loan in months

Loan Estimate

Monthly Payment

$—

Adjust values and calculate

Results are estimates based on standard formulas. Always verify critical calculations.

How this calculator works

Estimate monthly loan payments, total interest, and repayment totals. Ideal for personal, auto, and student loans with APR and term settings.

  1. 1Input the total Loan Amount (Principal) you wish to borrow.
  2. 2Enter the Annual Interest Rate (APR) offered by your lender.
  3. 3Select the total Loan Term in months.
  4. 4Hit 'Calculate' to see your monthly installment and total interest cost.

Calculation formula

M = P [ i(1 + i)ⁿ ] / [ (1 + i)ⁿ – 1 ]

Where M is the monthly payment, P is the principal, i is the monthly interest rate (annual rate / 12), and n is the total number of payments (months).

Practical calculation examples

Auto Loan Scenarios

Estimating a monthly payment on a $35,000 new car loan at 6% interest for a 60-month term.

Personal Financing

Comparing the total interest cost of a $10,000 loan over 2 years versus 4 years.

Debt Payoff Planning

Calculating the required monthly payment to clear a fixed debt amount within a specific timeframe.

When should you use this?

"You should use the loan calculator before signing any credit agreement. It is essential for comparing different lender offers, budgeting for a new car or personal loan, and understanding how different interest rates and terms impact your monthly cash flow and long-term financial health."

Need more info? Often paired with Finance Calculators, Mortgage Calculator or Percentage Calculator.

Frequently asked questions

What does APR stand for?

APR stands for Annual Percentage Rate. It is the total cost of borrowing money per year, including the interest rate and some lender fees.

Why is total interest so high on long terms?

The longer the loan term, the more time interest has to accrue on your remaining balance. Even a lower monthly payment can result in much higher total costs over time.

Can I use this for credit card debt?

Yes, though credit cards usually use daily compounding. This calculator provides a very close estimate for fixed-term debt repayment plans.

Does this include taxes or insurance?

No. This calculator only computes the bank's principal and interest. You should budget separately for any required insurance or local taxes.

Explore More Powerful Tools