Free Health Tool
BMI & Calorie Calculator
Enter your height, weight, age, sex, and activity level to instantly calculate your Body Mass Index, Basal Metabolic Rate, Total Daily Energy Expenditure, and personalized calorie targets for every goal from aggressive fat loss to muscle gain.
yrs
kg
cm
Fill in your details above to calculate your BMI and daily calorie needs.Waiting
-BMI
-BMR kcal
-TDEE kcal
-Protein (g)
-Carbs (g)
-Fat (g)
Understanding your results
BMI is a screening tool, not a diagnostic measure. Muscular individuals may score higher without excess body fat
BMR is the number of calories your body burns at complete rest to maintain basic organ function
TDEE is your BMR multiplied by your activity level and represents your true total daily calorie burn
A 500 kcal daily deficit produces approximately 0.45 kg or 1 lb of fat loss per week in most people
Never eat below 1200 kcal per day for females or 1500 kcal for males without medical supervision
Protein intake of 1.6 to 2.2 g per kg of bodyweight is recommended for those aiming to build or preserve muscle
TDEE estimates can vary by up to 15% between individuals due to differences in metabolic rate and muscle mass
Recalculate your TDEE every 4 to 6 weeks as your weight changes since lighter bodies burn fewer calories
This calculator uses the Mifflin-St Jeor equation which is considered the most accurate formula for most adults
All calculations happen in your browser and no personal data is stored or transmitted anywhere
This tool provides general educational estimates only and is not a substitute for professional medical or nutritional advice. Consult a qualified healthcare provider or registered dietitian before making significant changes to your diet or exercise routine.
