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Loan payment calculator
Estimate a fixed-rate monthly payment and download a complete amortization schedule.
Numbers and dates
Text, CSV
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
This tool needs JavaScript. If it does not load, refresh the page and try again.
How to use this tool
- Enter values using decimal points and choose the operation or assumptions shown.
- Select Calculate and review the numerical result and its stated conventions.
- Download the result or amortization schedule when available. Reset restores the example inputs.
Examples
10,000 at 5% nominal annual interest over 36 months gives a monthly payment of 299.71.
Limitations
- Runs locally. Decimal calculations use floating-point arithmetic, rounded to 12 significant digits; monetary displays use two decimals. Exact integer and fraction results are labelled separately.
- Use one currency throughout. Estimates use your inputs and stated assumptions; fees, taxes, inflation and rate changes are excluded unless explicitly entered. These are calculations, not lending offers or investment forecasts.
- Fixed nominal annual interest divided by 12; payments occur at month end for 1–1200 whole months. Amortization uses unrounded amounts; displayed cents can differ from a lender’s rounding and need not sum exactly. No extra payments or balloon terms.
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