- Enter Loan Details — Amount, annual interest rate, term in years, and start date.
- Calculate — Click 'Calculate' to see monthly payment, total interest, and payoff date.
- View Schedule — Full month-by-month amortization table with principal/interest split.
- Export CSV — Download the complete schedule as a spreadsheet file.
Amortization Calculator — Full Loan Payment Schedule
The Amortization Calculator is a free, privacy-first tool that generates a complete month-by-month loan payment schedule. See exactly how each payment splits between principal and interest, track your remaining balance, and export everything as CSV — all running entirely in your browser.
What is Amortization?
Amortization is the process of paying off a debt over time through regular payments. Each payment covers both interest charges and a portion of the principal balance. In the early years of a loan, most of each payment goes toward interest. As the loan matures, an increasing portion goes toward reducing the principal.
Understanding your amortization schedule helps you make informed decisions about extra payments, refinancing, and loan comparisons.
How the Calculator Works
Enter your loan amount, annual interest rate, loan term in years, and optional start date. The calculator uses the standard amortization formula to compute your fixed monthly payment, then generates a complete schedule showing:
- Monthly Payment — Your fixed payment amount each month.
- Principal Portion — How much of each payment reduces your loan balance.
- Interest Portion — How much goes to interest charges.
- Remaining Balance — Your outstanding loan balance after each payment.
Features
- Complete Schedule — Every month from first payment to payoff.
- Visual Chart — Bar chart showing yearly principal vs interest breakdown.
- CSV Export — Download the full schedule for spreadsheet analysis.
- Summary Stats — Monthly payment, total paid, total interest, payoff date.
- 5 Languages — English, Arabic, Spanish, Portuguese, Chinese.
Common Use Cases
- Mortgage payment planning
- Auto loan comparison
- Student loan repayment strategy
- Business loan analysis
- Understanding the impact of extra payments
Privacy
All calculations run in your browser. No financial data is sent to any server.