OnlineCalculator.si publishes calculators and research written and reviewed by practising doctors and engineers. Our aim is simple: every number you get here should be one you could defend to a colleague.
What makes our calculators different
- Named experts. Every calculator and article shows who wrote it and who reviewed it, with their professional credentials.
- Transparent methods. Each tool states its formula, its assumptions and its limitations, and cites the guideline or textbook it follows.
- Privacy by design. Calculations run in your browser. We do not store what you type.
- Maintained. Tools are re-reviewed at least every 12 months and whenever a source guideline changes.
Read our editorial policy, see how we review, or meet the editorial board.