Smart Loan Insights
Master your debt with our high-precision amortization engine. Professional tools, simplified for your financial journey.
Quick Presets
Loan Parameters
Awaiting Data
Enter your loan details on the left to generate your breakdown.
About AxelBase Loan Calculator
AxelBase was born from a simple frustration: most online loan calculators give you a single monthly payment number — and nothing more. They hide how much interest you're really paying, when the loan will actually end, and how every payment chips away at your principal. We built something different.
This tool uses the exact same standard amortization formula used by banks, credit unions, and spreadsheet software (PMT = P × [r(1+r)^n] / [(1+r)^n – 1]). But we don't stop at the formula. We show you the complete month-by-month schedule — principal portion, interest portion, remaining balance — so you can see the real shape of your debt over time.
Whether you're shopping for a mortgage, comparing auto loan offers, planning a personal loan, or just trying to understand how compound interest really works, AxelBase gives you clarity without asking for your email, phone number, or any personal information. Everything runs entirely in your browser — no account, no tracking, no data leaves your device unless you deliberately copy a share link.
We designed the experience to be fast and visual: instant updates as you type, a clean principal-vs-interest pie chart, an interactive balance-over-time graph, clickable amortization rows that highlight progress, and one-click CSV export so you can open the full schedule in Excel or Google Sheets. Share any calculation with a friend or advisor via a simple URL — no screenshots needed.
Behind the scenes we obsess over accuracy: final payment adjustments to eliminate rounding errors, proper handling of leap years in date calculations, and full-precision internal math before rounding only for display. The numbers you see match what you'd get from a high-end financial calculator or Excel's PMT/IPMT/PPMT functions (within standard rounding).
AxelBase is and will remain free forever. No ads. No affiliate links. No upselling. Just honest math for people who want to understand their loans before they sign.
Built with care in 2026 • Open-source philosophy • Privacy-first by design
How to Use the Calculator
1. Enter Your Loan Details
Start by filling in the four main fields on the left:
- Loan Amount — the principal you're borrowing
- Annual Interest Rate — the yearly rate (APR) offered by your lender
- Loan Term — how many years you plan to take to repay
- Start Date — optional; defaults to today
All fields update instantly — no "Calculate" button needed.
2. Review the Results Instantly
On the right you'll see:
- Monthly Payment — the fixed amount you'll pay each month
- Total Interest — how much extra you'll pay beyond the principal
- Total Cost — full amount repaid over the life of the loan
- Payoff Date — the exact month/year the loan ends
Scroll down to see the complete amortization table and interactive balance chart.
3. Explore, Share & Export
Use the tools at your fingertips:
- Click any month in the table → see that point highlighted on the balance graph
- Use "Jump to Year" to scroll quickly through long schedules
- Copy Shareable Link → creates a URL that reloads your exact numbers
- Download CSV → open the full schedule in Excel, Google Sheets, etc.
- Print / Save PDF → browser print dialog (use "Save as PDF")
Tip: Try different interest rates or terms side-by-side to see how small changes dramatically affect total interest paid.
Frequently Asked Questions
M = P × [r(1+r)^n] / [(1+r)^n – 1]Where:
• M = monthly payment
• P = loan principal
• r = monthly interest rate (annual rate ÷ 12)
• n = total number of payments (years × 12)
This is the same formula used by banks, Excel's PMT function, and most financial calculators. We round only for display — internal calculations maintain full precision.
• Banks may round differently (some round up each month, some adjust the final payment)
• They might include small fees or insurance not entered here
• Interest may be calculated daily instead of monthly
• Some lenders use 360-day years instead of 365
This calculator matches the classic fixed-rate amortization method used in most textbooks and spreadsheets. If your quote differs significantly, ask your lender for their exact calculation method.
• We do not collect emails, names, phone numbers, or IP addresses.
• We do not use cookies for tracking.
• We do not have a backend database.
The only way your numbers leave your device is if you manually copy the shareable link (which contains only the numbers you entered — no personal info). Even then, it's just a URL.
Extra payments and variable/floating rates are among our highest-priority features for future updates. In the meantime, you can manually test "what-if" scenarios by changing the term or rate and comparing results side-by-side.