Professional Loan Calculator
Calculate Loan with precision
Input
Results
Professional Loan Calculator
Calculate Loan with precision
Features
- Monthly payment from principal, annual rate, and term in years
- Total interest paid over the full term
- Standard amortizing-loan formula with monthly compounding
- Handles zero-interest loans (divides the principal evenly across the term)
- Everything runs in your browser; loan details never leave your machine
Tips & Best Practices
- The monthly payment uses the standard amortizing formula: P = L·r/(1−(1+r)^−n), with r as the monthly rate.
- Annual rate is converted to monthly automatically — enter the headline APR, not the period rate.
- Term is in years; the formula multiplies by 12 internally.
- The total-interest figure equals (monthly payment × months) − principal — same number on a real lender's sheet.
- For an amortisation schedule with per-month breakdown, use a dedicated mortgage planner.
FAQ
Is this tool free to use?
Yes, this tool is completely free with no registration required. There are no usage limits, no premium tiers, and no hidden costs. You can use it as many times as you need.
Is my data safe and private?
Absolutely. All processing happens locally in your browser. No data is ever sent to our servers or any third party. Your input never leaves your device, making it completely safe for sensitive information.
Does this tool work offline?
Once the page is loaded, the tool works entirely in your browser without requiring an internet connection. All processing is done client-side using JavaScript, so you can use it even when offline.
Which browsers are supported?
This tool works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. It is also fully functional on mobile browsers for both Android and iOS devices.
Can I use this tool on my phone or tablet?
Yes, the tool is fully responsive and works on all screen sizes including smartphones and tablets. The interface automatically adapts to your device for the best experience.