Health & Fitness calculators

Three groups cover three different situations. Fitness is for everyday body-composition and training numbers — BMI, body fat, BMR, calories and strength. Pregnancy is for anyone tracking dates through a pregnancy or trying to conceive. Nutrition & Health is for daily targets (macros, TDEE) and a few specific clinical numbers (kidney function, blood alcohol, body surface area).

These are screening and planning tools, not diagnosis. For anything about your own health, diet, fertility or pregnancy, the numbers here are a starting point for a conversation with a doctor, not a replacement for one.