About Numexa

Numexa exists to answer one question well: what's the number? — and then to explain what that number actually means.

What we're building

Most calculator sites feel like they were built a decade ago: cramped, cluttered, and quick to give you a figure with no context. We're building the opposite — tools that are instant, accurate, and genuinely helpful, with clear explanations and credible sources behind every result.

How we work

Every calculator's formula is written in typed, tested code and checked against trusted references before it ships — 249 automated tests and 102 source citations across the site. For health topics in particular, we cite authoritative sources such as the World Health Organization and national health institutes, and we're transparent about what each tool can and can't tell you.

Numexa is built and fact-checked by one person — meet Mohtashim and read the standard every calculator has to pass before it ships.

A note on our results

Our calculators are informational tools, not professional advice. For decisions about your health or finances, please consult a qualified professional.

Have feedback or spotted an error? We'd genuinely like to hear it — reach us on our contact page.