About CalcFolio

Most calculator websites look like they haven't been redesigned since 2009 — dense pages, sidebars stacked with ads, and a result buried somewhere in the middle. CalcFolio exists because the actual job — type a number in, get an honest number back — doesn't need any of that.

Every calculator here runs entirely in your browser. Nothing you type is sent to a server, logged, or used to identify you. We make money from display advertising (you'll see ads around the content, never inside the calculator itself), which is what keeps every tool free with no signup.

The formulas behind each tool are the same standard formulas banks, accountants and financial planners use — nothing proprietary or experimental. Where a calculation depends on local rules that vary by country or change year to year, we say so explicitly rather than guessing.

CalcFolio is an independent site built and maintained by a small team. It is not a bank, lender, broker or licensed financial advisor, and nothing on this site is personalized financial, legal, or tax advice — see our Terms of Use for details.

Found a bug, or a calculator you wish existed? Get in touch — every message is read.