A collection of free, browser-based health and fitness calculators. All health metrics are computed locally in your browser, your personal data is never collected or stored.
-
Updated
Jul 16, 2026
A collection of free, browser-based health and fitness calculators. All health metrics are computed locally in your browser, your personal data is never collected or stored.
A curated list of free, evidence-based fitness calculators — FFMI, TDEE, macros, 1RM, body fat.
Add a description, image, and links to the ffmi topic page so that developers can more easily learn about it.
To associate your repository with the ffmi topic, visit your repo's landing page and select "manage topics."