Built by homebuyers, for homebuyers — free, accurate mortgage tools for everyone.
Buying a home is one of the biggest financial decisions most people ever make — yet the tools to understand it are often locked behind paywalls, buried in jargon, or just plain inaccurate. We built mortgage-calculator.co to change that. Our goal is to give every buyer, renter, and refinancer access to professional-grade mortgage math for free, with no sign-up required.
We started as a small team frustrated with the state of mortgage tools online — calculators that required emails, showed ads over results, or simply gave wrong numbers. So we built our own. Starting with a single payment calculator, the site has grown into a comprehensive toolkit covering amortization, rent vs buy, ARMs, biweekly savings, affordability, HELOC, and much more. Today, thousands of people use it every day to make smarter home decisions.
The principles behind every tool we build
Every calculator on this site is free to use, forever. No freemium, no paywall, no hidden fees.
We use standard financial formulas — the same ones banks and lenders use — so you can trust the numbers.
All calculations happen in your browser. We never store, sell, or share your financial data.
No frameworks bloat, no slow loading. Results appear instantly as you type.
Fully responsive design — works perfectly on phone, tablet, and desktop.
We explain the math behind every result so you can understand, not just calculate.
We're a small, dedicated team and we read every message. Whether you've found a bug, want to suggest a feature, or just have a mortgage question — we'd love to hear from you.
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