Maltor

What I do here

I source the formulas from primary references (Wikipedia, NIST, peer-reviewed papers, government data), implement the calculator UIs, write the explanations and FAQs, and check every page before publishing. There's no team — every word on this site is written and reviewed by one person.

Why this site exists

Existing calculator sites are bloated with ads, popups, and recycled GPT content. I wanted something fast, ad-free, and actually useful — calculators that teach you the formula, show worked examples, and link to authoritative sources. Built for myself first, shared because it might be useful to you too.

How content is verified

• Every formula has a public reference (Wikipedia, NIST, ACI, ACSM, IEEE, or a named research paper).
• Worked examples are computed by hand and double-checked against the calculator output.
• FAQs cover the edge cases people actually ask about, not invented questions for keyword stuffing.
• No AI-generated text is published without thorough human rewriting and fact-checking.

Stack & ops

Next.js 16 with static export, Tailwind 4, KaTeX for formulas, FlexSearch for search. Hosted on a small Hetzner VPS in Germany, served by Caddy. The entire site is static HTML — no databases, no server-side JS for the math, nothing sent to any third party when you use a calculator.

By the numbers

• 36 calculators shipped
• 12 categories covered
• Zero cookies, zero trackers, zero ads
• Target: 100+ calculators in 6 months