Medical Disclaimer
This calculator is for informational and educational purposes only.
- Not Medical Advice: The information provided does not constitute medical advice, diagnosis, or treatment.
- Consult a Healthcare Professional: Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.
- No Doctor-Patient Relationship: Use of this calculator does not create a doctor-patient relationship.
- Accuracy Not Guaranteed: While we strive for accuracy, we make no warranties regarding the completeness, reliability, or accuracy of this information.
- Emergency Situations: Never disregard professional medical advice or delay in seeking it because of something you have calculated or read on this website.
BMR Calculator - Basal Metabolic Rate & TDEE
Calculate your BMR (Basal Metabolic Rate) and TDEE (Total Daily Energy Expenditure) instantly. Get personalized calorie goals and macro breakdown for weight loss, maintenance, or muscle gain. Uses the accurate Mifflin-St Jeor equation. 100% free and private.
Accurate Formula
Uses the Mifflin-St Jeor equation, the most accurate BMR formula
Complete Breakdown
Get BMR, TDEE, calorie goals, and macro breakdown all in one place
100% Private
All calculations happen in your browser. Your data stays private.
Frequently Asked Questions
What is BMR?
BMR (Basal Metabolic Rate) is the number of calories your body burns at rest to maintain basic physiological functions like breathing, circulation, and cell production. It represents the minimum amount of energy your body needs to survive.
What is TDEE?
TDEE (Total Daily Energy Expenditure) is the total number of calories you burn in a day, including BMR plus calories burned through physical activity and exercise. TDEE = BMR × Activity Multiplier.
How is BMR calculated?
This calculator uses the Mifflin-St Jeor equation, the most accurate BMR formula. For men: BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age) + 5. For women: BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age) - 161.
How many calories should I eat to lose weight?
To lose weight safely, aim for a 500-calorie deficit from your TDEE, which typically results in losing about 1 pound per week. The calculator provides personalized calorie goals based on your stats and activity level.
What are macros?
Macros (macronutrients) are protein, carbohydrates, and fats - the three main nutrients your body needs. This calculator provides a balanced macro split: 30% protein, 40% carbs, and 30% fats, which you can adjust based on your specific goals.
Is my data private?
Absolutely. All BMR and TDEE calculations happen in your browser. Your personal data never gets sent to any server, ensuring complete privacy and security.