About CalcHero

CalcHero exists because too many online calculators are slow, cluttered with ads, or buried behind signup walls. We believe useful math tools should be just that — useful. Open the page, get your answer, move on.

Every calculator on CalcHero runs entirely in your browser. There is no server processing your input, no account to create, and no data we could ever collect — even if we wanted to.

We cover the calculations people actually reach for: loan payments, percentage changes, BMI, age, tips, and more. Practical tools, zero friction.

Built for anyone who needs a quick, reliable answer:

• Professionals — loan estimates, VAT calculations, quick percentage checks during meetings.
• Students — percentage formulas, averages, and statistical analysis for coursework.
• Everyday use — BMI checks, tip splitting, figuring out your age in days, and more.
• Small businesses — discount pricing, VAT removal, hourly wage tracking.

Every calculation on CalcHero runs entirely client-side in JavaScript. Your numbers are never sent to any server — not ours, not anyone's.

We don't store any input data. We don't require an account, email, or any personally identifiable information. You are completely anonymous.

The only data we collect is anonymous usage analytics (page views, not inputs) to understand which tools are most helpful.

CalcHero is a fully static website. When you load a calculator page, you download a small HTML file with all the logic baked in as JavaScript. There is no API call when you type a number — the result appears instantly because the math runs locally.

Interactivity is powered by Alpine.js, a lightweight reactive library. State management stays in the browser. The site is served over a fast CDN with no dynamic server.

Built with modern tools optimised for performance and developer experience:

• Astro 5 — static site generator with zero JS by default
• Tailwind CSS 4 — utility-first CSS with custom dark design tokens
• Alpine.js — lightweight reactive JavaScript for calculator interactivity
• Docker + Nginx — containerised deployment, served as static files

Orion Forge is an indie studio building small, focused web tools. CalcHero is part of a growing suite of free utilities — the idea being that everyday digital tasks shouldn't require accounts, subscriptions, or heavyweight apps.

Every tool in the ecosystem (CalcHero, Converthor, TextUtils) follows the same philosophy: open it, use it, close it. No friction.