BMI Calculator - Calculate BMI Online

Calculate BMI, calories, protein, carbs, fat daily

Information

BMI Calculator Online - Professional free BMI, BMR, TDEE and Calories calculator for health

Tan Phat Digital's BMI calculator is a comprehensive solution to help you assess your weight status and plan your nutrition scientifically in the most accurate way. Calculate BMI (Body Mass Index) accurately with detailed classification according to WHO standards specifically for Asians: underweight (under 18.5), normal (18.5-22.9), overweight (23-24.9), obese (from 25 or more). Calculate BMR (Basal Metabolic Rate) - the amount of calories the body burns at complete rest and TDEE (Total Daily Energy Expenditure) - total daily energy consumption based on the Mifflin-St Jeor formula, which has been proven by many scientific studies to be the most accurate for modern people, about 5% more accurate than the old Harris-Benedict formula. Calculate the recommended macros: Protein (30%), Carbs (40%), Fat (30%) in a balanced ratio suitable for most people. 5 levels of activity options from sedentary (sitting in the office) to very high (exercising twice a day or heavy work). Intuitive interface with color-coded results helps quickly identify health status. Completely free, processed offline in the browser, no need to register an account, absolutely secure personal information.

Outstanding features

Calculate BMI accurately according to WHO formula with Asian standards
Detailed BMI classification: underweight, normal, overweight, obese with color-coded
Calculate BMR according to the Mifflin-St Jeor formula - the most accurate today
Calculate TDEE with 5 levels of activity from sedentary to very active
Calculate your daily Protein Needs (grams) based on TDEE
Calculate the recommended amount of Carbohydrates for optimal energy
Calculate the appropriate amount of fat for hormone and vitamin absorption
Display results visually with colors: green (normal), yellow (overweight), red (obese)
Explain in detail the meaning of the indicators and how to apply
Supports both men and women with separate calculation formulas
Calculate realtime when entering information
Responsive interface, usable on mobile and tablet
Completely free, no registration required, unlimited usage
Offline processing on the browser, personal information security

Why is it important to know BMI, BMR and TDEE? Importance in health management

BMI (Body Mass Index) helps quickly assess your weight compared to your height - this is the first and most important step to determine your health goals. This index is used by WHO and global health organizations as a screening tool to identify people at risk of weight-related diseases such as type 2 diabetes, cardiovascular disease, high blood pressure, and some types of cancer. BMR (Basal Metabolic Rate) indicates the number of calories the body burns at complete rest in 24 hours - this is the basis for calculating daily energy needs. BMR accounts for 60-75% of total energy intake and is influenced by many factors such as age, gender, muscle mass, and genetics. TDEE (Total Daily Energy Expenditure) is the total calories consumed each day including all activities from breathing, digestion to exercise - this is the most important number to lose weight, gain weight, or maintain current weight. Simple rule: eat less than TDEE to lose weight (caloric deficit), more to gain weight (caloric surplus), equal to maintain (maintenance). Knowing your macros (protein, carbs, fat) helps balance optimal nutrition, build and maintain muscle, provide steady energy throughout the day, and support important hormone functions in the body.

Benefits when used

  • Scientific assessment of weight status according to international WHO standards
  • Determine a reasonable and safe weight loss or weight gain goal
  • Know exactly how many calories you need to take in every day to reach your goal
  • Balance macros (protein, carbs, fat) for optimal nutrition
  • Make a scientific meal plan based on specific data
  • Track fitness progress and make timely adjustments
  • Avoid eating too little (causes fatigue, muscle loss) or too much (gains fat)
  • Support muscle building goals with appropriate protein intake
  • Early detection of the risk of obesity and related diseases
  • Optimize performance in exercise and sports
  • Improve overall health and quality of life
  • Save time compared to complicated manual calculations

Detailed instructions on how to calculate BMI and Calories

  1. 1Enter your current weight (kg)
  2. 2Enter height (cm)
  3. 3Enter your age
  4. 4Select gender: Male or Female
  5. 5Choose an appropriate weekly activity level
  6. 6Press the button
  7. 7,
  8. 8,

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