About CalcDomain

What CalcDomain is

CalcDomain is a free collection of calculators and explanatory guides for finance, business, taxes, math, education, and everyday decisions. Each tool answers a specific question and shows the formula behind its result rather than just the number.

There is no sign-up, paywall, or download. The calculators are meant to be read as much as used: the working is on the page, and any external figure carries its source and date.

Who operates CalcDomain

CalcDomain is operated by Fidamen, a brand of Yeah Up S.r.l. - CF e P.IVA: IT02930760307 - based in Udine, 33100 Italy. General enquiries and corrections reach us at contact@calcdomain.com.

You can read our operating documents on the Editorial Policy, Terms of Service, and Privacy Policy pages.

Why CalcDomain exists

Most online calculators return a number with no way to check it. CalcDomain exists to close that gap: to publish tools whose math is visible, whose data is dated, and whose assumptions are stated next to the results they affect.

The goal is a calculation you can reproduce and trust — one that does not silently change underneath you when a source updates.

Who creates and reviews the calculators

Editorial responsibility for CalcDomain rests with Ugo Candido, founder and editor-in-chief. He is accountable for the methodology that governs every calculator, the dated-source policy, and the technical review of each tool.

The editorial promise is not that one person is a licensed expert in every jurisdiction, but that every calculator is built on a documented formula, checked against worked examples, and sourced from the official publisher of the jurisdiction it covers.

How calculators are built and tested

Each calculator is generated from a declarative definition and a shared formula archetype. The same code computes the result during our automated tests and when you use the live tool, so the math you see is the math that was tested.

Nothing is published unless it passes every contract check: the formula must reproduce known-correct reference cases within a strict tolerance, inputs and edge cases must fail closed with an explanation instead of a silent wrong number, and the page content must be substantively unique.

Formula and data transparency

Every calculator shows the formula it uses. Where a tool depends on external data — tax brackets, benchmark rates, fee schedules — that data is stored as a dated snapshot with its publisher, effective date, and retrieval date recorded.

We treat data as versioned snapshots rather than live feeds, so a calculation is reproducible and every figure is labelled with the date it applies to.

Browser-local calculation and privacy boundary

Every calculator runs entirely in your browser. The numbers you type are used to compute a result on your own device and are not sent to a CalcDomain server.

The full detail of what is and is not collected — analytics and advertising included — is set out in our Privacy Policy.

AI-assisted workflows and human accountability

CalcDomain may use AI-assisted workflows for drafting, formatting, test generation, and QA support. AI is a tool in the process, not the authority over it.

Final responsibility for published formulas, sources, assumptions, and editorial decisions remains with CalcDomain's editor. How this works in practice is documented in the Editorial Policy.

Funding, advertising and editorial independence

CalcDomain is a self-funded project supported by display advertising (Google AdSense). Advertising does not influence our formulas, benchmark data, source selection, or editorial conclusions.

We do not sell your data or accept sponsored calculations. Where advertising appears, it is kept separate from editorial content.

Corrections, changelog and feedback

Accuracy matters to us. If you spot a calculation error, an outdated figure, or an unclear assumption, tell us through Contact & Feedback. Confirmed errors are corrected once they are verified, and the affected page's update date is revised.

Public build activity — calculator checks and dated-source updates — is logged on the Changelog. Common questions are answered on the FAQ.

Important limitations

CalcDomain provides educational estimates only. Our calculators are not financial, tax, or legal advice, and they cannot account for every detail of your personal situation.

Before making a decision, confirm the figures with your lender, a licensed professional, or the relevant official source.