Loan Calculator

What is the Loan Calculator?

The Loan Calculator is a free online tool that estimates monthly payments, total interest, and total cost for any type of loan — personal loans, auto loans, mortgages, student loans, or business financing. Enter the loan amount, interest rate, and term, and the calculator instantly shows your monthly payment plus a full breakdown of how much you will pay in principal versus interest over the life of the loan. It is an essential tool for budgeting, comparing offers, and avoiding surprises.

How to Use the Loan Calculator

1. Enter the loan amount (principal) you plan to borrow.
2. Enter the annual interest rate (APR) from your lender.
3. Enter the loan term in months or years.
4. Click "Calculate" — see your monthly payment, total interest, and total cost.

Key Features

• Works for any loan type: Personal, auto, mortgage, student, or business loans.
• Instant results: Monthly payment, total interest, and total repayment appear immediately.
• Compare scenarios: Change inputs to see how rate, amount, or term changes the cost.
• Free and private: All calculations are done in your browser — no data is sent or stored.
• Mobile-ready: Use it on any device when meeting with a lender.

Pro Tips

• Compare APR, not just rate: APR includes most fees while the nominal rate does not — always compare loans on APR to see the true cost.
• Shorter term = less interest: A 15-year mortgage costs far less in total interest than a 30-year one, even at the same rate — try both terms in the calculator.
• Stress-test the payment: Make sure the monthly payment is comfortable even if your income dips — a common rule is to keep total debt payments under 36% of gross income.

Frequently Asked Questions

How is the monthly payment calculated?

The tool uses the standard amortization formula: M = P × (r(1+r)^n) ÷ ((1+r)^n − 1), where P is principal, r is the monthly interest rate, and n is the number of payments.

Does the calculator include taxes and insurance?

No. This is a base loan calculator showing principal and interest only. For mortgages, add property tax, insurance, and HOA fees separately for full housing cost.

Can I trust this calculator for major financial decisions?

It gives accurate base estimates, but always confirm with your lender before signing — their offer may include fees or rate adjustments not modeled here.

Tamer Baghdadi

CEO / Co-Founder