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About Mortgage Calculator
Mortgage Calculator — free, private, browser-based finance tool
Monthly payment with taxes and insurance, total interest, full schedule. It runs in your browser, so the file is processed on your own device.
Why use Mortgage Calculator
- ·Files stay on your device — nothing is uploaded
- ·No signup needed
- ·Works in any modern browser, on any OS
- ·Free daily use; Pro removes limits and watermarks
How to use it
- 1Type or paste your input.
- 2Pick the options you want.
- 3Copy or save the result.
What Mortgage Calculator does
Monthly payment with taxes and insurance, total interest, full schedule.
How it works
Decimal-precise arithmetic (no IEEE-754 rounding), and TVM formulas that match HP-12C and Excel exactly. The processing code runs inside the page, so your file is not uploaded to a server — you can confirm this in your browser's DevTools → Network tab.
Frequently asked questions
Does Mortgage Calculator upload my files?+
No. Mortgage Calculator runs in your browser and processes the file on your device. Nothing is sent to our servers.
Is Mortgage Calculator free?+
Yes, with a daily free allowance and no signup. Xonvert Pro ($4.99/month) removes the daily limits and the watermark on exported files.
Do I need to install anything?+
No. It works in any modern browser on Windows, macOS, Linux, ChromeOS, Android and iPad.
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