Health & Fitness Calculators
4 free tools to track your health metrics
BMI Calculator
Body Mass Index & health category
Body Fat Calculator
US Navy body fat method
Calorie Calculator
Daily TDEE & macros
Pregnancy Calculator
Due date & timeline
Free Health Calculators
Our health calculators help you understand key health metrics. The BMI calculator uses WHO-standard categories, the body fat calculator uses the US Navy method, the calorie calculator uses the Mifflin-St Jeor equation for TDEE, and the pregnancy calculator estimates due dates using Naegele's Rule. All tools are for informational purposes — consult a healthcare professional for medical advice.