Elements84
Health decision tools

Tools that explain the result — and its limits.

Calculators, converters, estimators and full decision tools that give you a result, the practical context to read it and the limitations that come with it. Free, evidence-based and calculated locally in your browser.

Filter by category

The Evidence Foundation

Health information should show both what is known and where certainty ends.

Elements84 brings reviewed health evidence, practical decision tools and plain-English explanations together without presenting educational guidance as diagnosis or treatment.

  1. Named sources
  2. Human evidence separated from theory
  3. Limitations shown beside conclusions
  4. Educational, not diagnostic

Reviewed health evidence, practical decision tools and plain-English health education.

Educational information only. Elements84 provides educational information and decision-support tools. It is not a substitute for professional medical advice, diagnosis or treatment.

© 2026 Elements84.