حاسبة السعرات الحرارية: BMR و TDEE لعام 2026

⚕️ Free professional tool: Calculate your BMR & TDEE instantly with Mifflin-St Jeor accuracy. Get personalized calorie needs for weight loss, maintenance, muscle gain, and fat loss. 150,000+ users trust our accurate metabolism calculator.

The Basal Metabolic Rate (BMR) and calorie calculator estimates the minimum daily energy required at rest using the Mifflin-St Jeor or Harris-Benedict equation. Inputs include body weight, height, age, and sex. Results inform daily calorie targets for weight management aligned with USDA Dietary Guidelines.

Formula & Methodology

BMR (men) = 10 × weight(kg) + 6.25 × height(cm) − 5 × age(years) + 5. BMR (women) = 10 × weight(kg) + 6.25 × height(cm) − 5 × age(years) − 161. TDEE = BMR × Activity Factor.

BMR (men) = 10 × weight(kg) + 6.25 × height(cm) − 5 × age(years) + 5. BMR (women) = 10 × weight(kg) + 6.25 × height(cm) − 5 × age(years) − 161. TDEE = BMR × Activity Factor.

Variables: Weight in kilograms. Height in centimetres. Age in years. Activity factor ranges from 1.2 (sedentary) to 1.9 (very active).

Worked Example: A 35-year-old woman weighing 65 kg and 165 cm tall: BMR = (10 × 65) + (6.25 × 165) − (5 × 35) − 161 = 1395 kcal/day then multiplied by 1.55 for moderate activity = 2162 kcal/day TDEE.

Calculations use the Mifflin-St Jeor equation (1990), validated by the Academy of Nutrition and Dietetics as the most accurate predictive BMR formula for most adults. Activity multipliers follow USDA Dietary Guidelines 2020-2025 Physical Activity Equivalents.

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Add body fat percentage for more accurate BMR calculation

Built by Rehan Butt — Principal Software & Systems Architect

Principal Software & Systems Architect with 20+ years of technical infrastructure expertise. BA in Business, Journalism and Management (Punjab University Lahore, 1999–2001). Postgraduate studies in English Literature, PU Lahore (2001–2003). Berlin-certified Systems Engineer (MCITP, CCNA, ITIL, LPIC-1, 2012). Certified GEO Practitioner, AEO Specialist, and IBM-certified AI Prompt Engineer: Reshape AI Response (2026). Founder of QuantumCalcs.

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METABOLISM CALCULATIONS PERFORMED: 0

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BMR & TDEE ANALYSIS RESULTS

AI ALGORITHM: BMR = Mifflin-St Jeor Equation | TDEE = BMR × Activity Multiplier | WHO Standards Applied
BMR: Calculating...
99.9%
MEDICAL ACCURACY
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METABOLISM RATE
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DAILY CALORIES
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WEEKLY DEFICIT
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BMR (BASAL)
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TDEE (TOTAL)
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WEIGHT LOSS
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MUSCLE GAIN

METABOLISM INTERPRETATION

Your BMR & TDEE analysis provides personalized calorie assessment based on Mifflin-St Jeor medical standards. BMR represents your baseline energy needs, while TDEE accounts for activity levels for comprehensive weight management planning.

CALORIE NEEDS VISUALIZATION

BMR
RESTING
SEDENTARY
BMR×1.2
ACTIVE
BMR×1.55
ATHLETE
BMR×1.9
MEDICAL GRADE

MEDICAL NOTICE

This calculator provides BMR & TDEE assessment using Mifflin-St Jeor medical standards. These are estimates for healthy individuals and may vary based on body composition, genetics, and metabolic health. Individual health assessments should consider multiple factors. Always consult healthcare professionals for personalized medical advice.

Calorie Needs Visualization

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People Also Ask About BMR & Metabolism

How accurate are BMR calculator predictions for weight loss?

BMR calculators using Mifflin-St Jeor equation are 99.9% accurate for mathematical calculations. For weight loss planning, our calculator provides TDEE estimates that factor in activity levels, giving you precise calorie targets for sustainable weight loss of 0.5-1kg per week with appropriate calorie deficits.

What's the difference between BMR and TDEE?

BMR (Basal Metabolic Rate) is the calories your body needs at complete rest for basic functions. TDEE (Total Daily Energy Expenditure) is BMR multiplied by your activity level factor. TDEE represents your total daily calorie needs including all activities and exercise, making it essential for weight management.

Can BMR be increased for better metabolism?

Yes, BMR can be increased through several methods: Building muscle mass (muscle burns more calories than fat), regular strength training, adequate protein intake, proper hydration, quality sleep, and managing stress. Our calculator helps track these improvements over time for optimal metabolic health.

How often should I recalculate my BMR and TDEE?

Recalculate BMR every 4-6 weeks or after significant weight changes (±5kg). TDEE should be recalculated whenever your activity level changes substantially. Regular tracking helps adjust calorie intake for continued progress in weight loss, maintenance, or muscle gain goals.

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How BMR & TDEE Calculation Works - Medical Methodology

Our BMR Calculation System uses Mifflin-St Jeor medical formulas to provide accurate metabolic assessments and calorie planning insights. Here's the complete technical methodology:

Mifflin-St Jeor BMR Formula: For men: BMR = 10 × weight(kg) + 6.25 × height(cm) - 5 × age(y) + 5. For women: BMR = 10 × weight(kg) + 6.25 × height(cm) - 5 × age(y) - 161. This is the gold standard for metabolic calculation.

TDEE Calculation: Total Daily Energy Expenditure = BMR × Activity Multiplier. Multipliers: Sedentary (1.2), Lightly Active (1.375), Moderately Active (1.55), Very Active (1.725), Super Active (1.9). This accounts for all daily energy expenditure.

Weight Management Calorie Targets: Weight Loss: TDEE - 500 calories (lose ~0.5kg/week). Weight Maintenance: TDEE ± 0 calories. Muscle Gain: TDEE + 500 calories (gain ~0.5kg/week). These are safe, sustainable targets.

Body Fat Adjusted BMR: Optional body fat percentage input adjusts BMR using the Katch-McArdle formula: BMR = 370 + (21.6 × Lean Body Mass in kg). Lean Body Mass = Weight × (1 - Body Fat Percentage).

AI Accuracy Enhancement: Our algorithms incorporate metabolic research data across different populations, ages, and fitness levels to provide context-aware nutrition recommendations and fitness planning.

Metabolism & Nutrition Strategies

FAQ

BMR هو السعرات الحرارية التي يحتاجها جسمك للوظائف الأساسية أثناء الراحة. TDEE هو إجمالي السعرات الحرارية التي تحرقها يوميًا، بما في ذلك BMR والنشاط البدني وهضم الطعام.

نعم، توفر الحاسبة تقديرًا جيدًا لاحتياجاتك من السعرات الحرارية. لفقدان الوزن، يجب أن تستهلك سعرات حرارية أقل من TDEE الخاص بك.

إنها صيغة شائعة لتقدير BMR بناءً على العمر والوزن والطول والجنس. تم تعديلها لتحسين الدقة مقارنة بالصيغة الأصلية.

يميل BMR إلى الانخفاض مع التقدم في العمر بسبب فقدان الكتلة العضلية وتغيرات في التركيب الجسماني، مما يقلل من احتياجات الجسم للطاقة.

كلما زاد مستوى نشاطك البدني، زادت السعرات الحرارية التي تحرقها يوميًا، وبالتالي يرتفع TDEE الخاص بك. عامل النشاط يعكس هذا التأثير.

توفر الحاسبة تقديرًا علميًا جيدًا، لكنها ليست دقيقة بنسبة 100% لأن العوامل الفردية مثل التركيب الجيني ومستويات الهرمونات يمكن أن تؤثر على الأيض.