ABOUT UTILENS
Useful tools should be easy to check.
Utilens is an independent collection of focused online utilities operated by Damian Kozłowski. The goal is simple: put the working tool first, explain the method clearly and avoid unnecessary accounts, uploads or detours.
How tools are built
Tool interfaces and calculations are implemented as static HTML, CSS and JavaScript. Core calculation modules are covered by automated test cases, and every production build checks JavaScript syntax, internal links, unique metadata, canonical URLs and missing tool interfaces before release.
How results are presented
Each tool includes a short method and a concrete example so the output can be sanity-checked. Where a result is only an estimate — especially for health or financial planning — the page says so explicitly. Utilens does not present general-purpose estimates as professional advice.
Privacy by design
The current tools process entered calculator, converter and text values in your browser. No account is required. Standard request metadata may still be processed by the hosting infrastructure when you load a page; see the Privacy Policy for the current site setup.
Corrections and feedback
If you spot a calculation, wording or usability issue, email contact@utilens.com. Useful corrections are reviewed before the next release.