Calculating loan payments and interest usually means opening a spreadsheet or a banking app. The Loan Calculator does it in the browser: enter principal, rate, and term and get monthly payment, total interest, and amortization schedule—no sign-up and no data sent to a server.
What loan types can be calculated?
Loan Calculator supports personal loans, mortgages, auto loans, and any fixed-rate loan type. It shows a full amortization schedule with principal and interest for each payment. You need principal, annual interest rate, and loan term (years or months); optional: compounding frequency. Calculation runs in your browser; your numbers are not stored or sent. Use it to compare offers, plan payments, or see how much interest you pay over the life of a loan. Lenders may use slightly different rounding or include fees/insurance—use our result as an estimate and confirm with the lender if your payment differs.
Key Features
- Loan types — Personal loans, mortgages, auto loans, and any fixed-rate loan type.
- Amortization — Yes. A full amortization schedule showing principal and interest for each payment.
- Input — Principal, annual interest rate, and loan term (years or months). Optional: compounding frequency.
- Privacy — No. Your data is not sent to a server. Calculation runs in your browser. Your numbers are not stored or sent.
- No account — Use as often as you need without sign-up.
- Estimate — Lenders may use slightly different rounding or include fees/insurance. Use our result as an estimate; confirm with the lender.
How to Use the Loan Calculator
- Open the Loan Calculator tool.
- Enter principal, annual interest rate, and term (years or months). View monthly payment, total interest, and amortization schedule.
- Use the "Use tool" button on the docs page if you are reading this from the documentation.
Real Use Cases
- Compare offers — Enter terms from different lenders. Compare monthly payment and total interest. Choose the best fit.
- Plan payments — See how much you will pay each month and over the life of the loan. Budget accordingly.
- Total interest — See how much interest you pay in total. Useful for deciding term length or extra payments.
- Amortization — Review principal vs interest per payment. Plan extra principal payments if allowed.
- Teaching — Demonstrate loan math and amortization. Show impact of rate and term.
- Quick check — Verify a quote from a lender. Use as an estimate; confirm with the lender for exact figures.
Why Use the Loan Calculator Instead of Alternatives?
- vs. Percentage Calculator — Percentage Calculator does percent math. This tool is for loans (payment, amortization). Use both as needed.
- vs. BMI Calculator — BMI Calculator is for health. This tool is for loans. Different domain.
- vs. Unit Converter — Unit Converter converts units. This tool calculates payments. Different purpose.
- vs. Spreadsheet — No setup. Works in the browser. Instant amortization schedule.
Lenders may use slightly different rounding or include fees/insurance. Use our result as an estimate; confirm with the lender if your payment differs from the lender.
Benefits for Borrowers, Educators, and Advisors
- Borrowers — Compare offers and plan payments. No data sent.
- Educators — Teach loan and amortization math. Show impact of rate and term.
- Advisors — Quick client-side estimate. Always recommend confirming with the lender.
Common Mistakes
- Payment differs from lender — Lenders may use slightly different rounding or include fees/insurance. Use our result as an estimate; confirm with the lender.
- Wrong term units — Use years or months consistently. Mixing them gives wrong payment.
- Variable rate — This tool assumes fixed rate. Variable loans need different treatment.
- Forgetting to copy — The result is not saved. Copy or screenshot the schedule if needed.
Frequently Asked Questions
What loan types can be calculated?
Personal loans, mortgages, auto loans, and any fixed-rate loan type.
Does it show amortization?
Yes, a full amortization schedule showing principal and interest for each payment.
Principal, annual interest rate, and loan term (years or months). Optional: compounding frequency.
Is my data sent to a server?
No. Calculation runs in your browser. Your numbers are not stored or sent.
When should I use a loan calculator?
Use it to compare offers, plan payments, or see how much interest you pay over the life of a loan.
Why does my payment differ from the lender?
Lenders may use slightly different rounding or include fees/insurance. Use our result as an estimate; confirm with the lender.
Loan Calculator gives you payment and amortization in seconds: enter principal, rate, term, view result. No account, no server round-trip. For percentages use Percentage Calculator, for BMI use BMI Calculator, and for units use Unit Converter.
Use the Loan Calculator tool to calculate loan payments.