What is Calcuno?

Calcuno is a collection of free, lightweight calculator tools designed for everyone. Available tools include a BMI calculator, an age calculator, and a days-between-dates calculator. No account is needed and no data is collected.

Universal Design

Every tool uses icons, numbers, and units — no text labels that require translation. This means the interface works intuitively for anyone, regardless of their language background.

Multilingual Support

Calcuno is available in eight languages: English, Japanese, Chinese, Korean, Spanish, French, German, and Portuguese. Each language has its own URL for accurate search engine indexing, and your preferred language is remembered automatically.

Free & Lightweight

Calcuno runs on Cloudflare Pages' free tier with no server-side code. All calculations happen instantly in your browser. There are no subscriptions, no sign-ups, and no tracking.