Health & Fitness Calculators
Free health & fitness calculators to help your business grow.
Health and wellness metrics are essential for individuals looking to track their fitness progress, manage their weight, or optimize their athletic performance. Our health calculators are built based on standard medical formulas used by global health organizations. They provide quick, reliable assessments of various physical metrics, enabling users to set realistic goals and monitor their journey. From Body Mass Index (BMI) and Basal Metabolic Rate (BMR) to target heart rates and daily caloric needs, these tools translate complex physiological data into easy-to-understand numbers. Whether you are embarking on a new diet, planning a marathon training schedule, or simply maintaining a healthy lifestyle, understanding your body's specific numbers is the first step toward achieving your goals safely and effectively.
Overview
When to Use These Calculators
Popular Calculators
BMI Calculator
Calculate your Body Mass Index (BMI) using metric (kg/cm) or imperial (lb/in) units. BMI categories: Underweight < 18.5, Normal 18.5–24.9, Overweight 25–29.9, Obese ≥ 30.
BMR & TDEE Calculator
Calculate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) using the Mifflin-St Jeor or Harris-Benedict formula. Adjust for your activity level to find your daily calorie needs.
Calories Burned Calculator
Calculate calories burned during exercise using the MET (Metabolic Equivalent of Task) method. Supports walking, running, cycling, swimming, yoga, and weight training.
Daily Water Intake Calculator
Calculate your recommended daily water intake based on body weight, activity level, and climate. Especially useful in hot and humid climates like Vietnam.
Ideal Weight Calculator
Calculate your ideal body weight using three established formulas: Devine, Robinson, and Hamwi. Results are averaged to give a balanced estimate based on your height and gender.
Pregnancy Due Date Calculator
Estimate your pregnancy week and days remaining until your due date using Naegele's rule (LMP + 280 days). Adjusted for your menstrual cycle length.
Frequently Asked Questions
Is BMI an accurate measure of health?
Which BMR formula is the most accurate?
How frequently should I recalculate my TDEE?
Can these calculators replace a doctor's advice?
References & Sources
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