About Calcuxa

What we do

Calcuxa publishes a growing set of focused calculators — finance, unit converters, tax, health, and dates. Each tool is a single page with one job: give it the numbers, get the answer. Everything runs in your browser; nothing you type is sent to a server.

Why this site exists

Most calculator sites are either cluttered with ads, vague about their formulas, or locked behind accounts. Calcuxa was built to be the opposite: fast, transparent about the math, and respectful of your privacy. The goal is a tool you can trust at a glance and finish using in seconds.

Who runs it

Calcuxa is run by a single creator, Wanli Lu, who designs, writes, and tests every calculator and guide on the site. There is no anonymous content mill and no AI-generated advice presented as fact — each page is built and checked by a person who stands behind it. Read more on the author page.

How we keep the math right

Every calculation is implemented as a small, pure function and covered by automated tests before publication. If a formula produces the wrong number, we treat it as a bug, not an estimate. The same test suite runs on every update, so a change to one calculator can't silently break another.

Privacy by design

Calculator inputs never leave your device. We use privacy-respecting, aggregate-only analytics (no individual profiling) and keep third-party scripts to a minimum. See the Privacy Policy for specifics.

No advice

Calculators and guides are for general information only. Financial, tax, and health results are not professional advice. Consult a qualified professional before decisions that matter. Each finance page carries this disclaimer explicitly.

Get in touch

Found an error, want a specific tool, or have a correction? Email [email protected] or visit the contact page. We read everything.