Tools

Calculators that show their working

Most weight-loss calculators return a confident number and hide the model. These do the opposite. Every coefficient traces to a published effect size, every assumption is on the page, and where the evidence runs out they say so instead of extrapolating quietly.

Microdose calculatorYour goal and timeframe, read backwards against the published dose-response curves. Flags the point where the number stops being evidence.
Country approval checkerPick a country and see which of the nine brands hold a live registration there, read from that country’s own drug register.
Stack builderPick the interventions you actually plan to run. It removes the ones that overlap, discounts for complexity, models adaptation, and shows its working.

A shared engine. Both tools run on the same model, at /assets/engine.js?v=ecef805b. Intervention effect sizes are generated from the site’s research files rather than typed in by hand, so a number on a page and a number in a calculator cannot drift apart.

These are estimation tools for education. They do not know your medical history and they are not a substitute for a clinician. If you have a history of disordered eating, tools like these are worth skipping.