Small tools, clear context
Free health calculators and tools
Explore food, movement and health-record calculations with their assumptions in view. These free public tools need no account and do not replace care from a qualified professional.
01 / Lab records
Free AI Blood Test Explainer
A consent-first explainer for a small set of supported lab values.
02 / Everyday reference
Adult BMI Calculator
Compare adult BMI with WHO and Asian/Indian reference points.
03 / Everyday reference
Calorie and TDEE Calculator
Estimate resting energy and maintenance with visible assumptions.
04 / Everyday reference
Protein Intake Calculator
See baseline and training protein references from body weight.
05 / Everyday reference
HbA1c to Average Blood Sugar Converter
Convert HbA1c units into estimated average glucose.
06 / Everyday reference
Steps to Calories Calculator
Turn a step count into estimated distance, time and energy.
07 / Everyday reference
Water Intake Reference Calculator
Explore total-water reference values and a food-share assumption.
How to use this collection
Start with the question, not the number.
Each explainer shows how the estimate is made and where it can mislead. Results are educational starting points; personal decisions belong in a conversation with someone who understands your circumstances.