About Toolivaro

Toolivaro is an independent calculator and converter site: 44 tools across Business Calculators, Math Calculators & Converters, Health Calculators, Home & Construction Estimators, Developer Tools, Time & Date Tools, and Image Tools, in six languages — English plus Spanish, Brazilian Portuguese, French, German, and Japanese. Every calculation runs in your browser, no account is required, and the site is free.

Who operates Toolivaro

Toolivaro is operated by a single independent developer — no agency, no investor board, no content farm. The site is not affiliated with Omni Calculator or any other calculator platform. That independence is why you will not find promotional calculators or sponsored formula changes here: when a page says something is the standard convention, it is because a named source says so, and the source is listed on the page.

The practical consequence: every page can be reached at hello@toolivaro.com or the contact page, and corrections get a direct answer.

How the tools are built and reviewed

Each tool follows a content standard, not a template: its own copy, a worked example with real numbers, the formula or algorithm in plain language with every symbol defined, common mistakes and limitations stated honestly, and a source list. Every page carries a last reviewed date and a version, so you can see when a method was last checked. The standards are described on the methodology page, the correction policy on the editorial policy page, and the registry of named sources on the sources page.

The site is intentionally small in catalog size and deep in per-tool coverage. Adding a tool means writing the content standard, sourcing the conventions, translating the result into five languages, and reviewing it — that is the pace at which the catalog grows. The same standard extends to the blog, where the guides apply the formula-and-limitations approach to the decisions the tools support — pricing, estimating, scheduling — written with the same reviewed, sourced method.

Privacy and funding

No page ships an analytics script, and calculations, uploads, and exports never leave your device. The build is funded by a small number of ad slots on tool pages; editorial pages ship no ads, and no ad loads without consent. There is no paywall and no account — a private, ad-supported model, described fully on the privacy page.