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TDEE Calculator
Calculate your Total Daily Energy Expenditure and discover your exact daily calorie burn based on activity level
Calculate Your TDEE
• Uses Mifflin-St Jeor equation for accurate BMR
• Accounts for your specific activity level
• Calculates total daily calorie expenditure
• Foundation for weight loss/gain planning
• Updated as your body composition changes
Your TDEE Results
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Understanding TDEE (Total Daily Energy Expenditure)
What is TDEE?
Total Daily Energy Expenditure (TDEE) is the total number of calories your body burns in a single day. It includes your Basal Metabolic Rate (calories burned at rest) plus calories burned through daily activities, exercise, and digestion. Understanding your TDEE is the foundation for effective nutrition planning, whether your goal is weight loss, gain, or maintenance.
TDEE Components Breakdown
| Component | Description | Percentage of TDEE |
|---|---|---|
| BMR (Basal Metabolic Rate) | Calories burned at complete rest for basic functions | 60-75% |
| NEAT (Non-Exercise Activity Thermogenesis) | Calories burned from daily activities, work, fidgeting | 15-30% |
| Exercise Activity Thermogenesis (EAT) | Calories burned from structured exercise/training | 5-10% |
| Thermic Effect of Food (TEF) | Calories burned digesting, absorbing, processing food | 8-15% |
Mifflin-St Jeor BMR Formula
This calculator uses the Mifflin-St Jeor equation, one of the most accurate formulas for calculating Basal Metabolic Rate:
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
Activity Level Multipliers
- Sedentary (1.2x): Little to no exercise, desk job. Daily activity minimal beyond work/household tasks
- Light (1.375x): Light exercise 1-3 days per week. Includes casual walking, light sports
- Moderate (1.55x): Moderate exercise 3-5 days per week. Mix of cardio and resistance training
- Very Active (1.725x): Intense exercise 6-7 days per week. Regular athletic training or demanding job
- Intense (1.9x): Very intense training, sports, or physically demanding job. Double training sessions or professional athlete
How to Use Your TDEE for Your Goals
Weight Loss Strategy
- Caloric Deficit: Eat 300-500 calories below TDEE = 0.3-0.5 kg loss per week
- Sustainable Approach: Avoid extreme deficits. Very low calories cause muscle loss and metabolic adaptation
- Example: If your TDEE is 2,500 kcal, eat 2,000-2,200 kcal daily for weight loss
- Monitoring: Track progress weekly. Adjust intake if no change after 2-3 weeks
- Protein Priority: Maintain high protein (1.2-1.6g per kg) to preserve muscle during deficit
Muscle Gain / Bulking
- Caloric Surplus: Eat 300-500 calories above TDEE = 0.3-0.5 kg gain per week (mostly muscle with training)
- Protein Intake: 1.2-2.0g per kilogram bodyweight supports muscle protein synthesis
- Example: If your TDEE is 2,500 kcal, eat 2,800-3,000 kcal for muscle gain
- Training Essential: Strength training 4-6 days/week required for muscle growth
- Quality Foods: Prioritize whole foods—chicken, fish, eggs, beans, rice, vegetables
Weight Maintenance
- Eat at TDEE: Consume calories equal to your calculated TDEE to maintain current weight
- Consistency: Track meals to stay within 100-200 kcal of TDEE
- Health Focus: Prioritize nutrient quality. Include vegetables, lean proteins, whole grains
- Flexibility: Allow ±200-300 kcal variance across different days without guilt
- Recalculate: Update TDEE if activity level or body composition changes significantly
Adjusting TDEE Over Time
- Weight Changes: Recalculate TDEE every 4-6 weeks as your weight changes (especially in deficit)
- Metabolic Adaptation: After extended dieting, metabolism may decrease slightly. Increase calories gradually
- Activity Changes: If you increase exercise frequency/intensity, recalculate and increase calories
- Seasonal Variation: More outdoor activity in summer may increase TDEE vs winter
• Be honest about activity level—underestimating leads to slower progress
• Account for all daily activities, not just formal exercise
• Use tracking apps to verify calculations after 1-2 weeks
• Remember individual variation (±10-20% is normal)
• Combine TDEE knowledge with consistent execution for best results
Frequently Asked Questions
Why is my TDEE estimate different from other calculators?
Different calculators use different formulas (Katch-McArdle, Roza, Harris-Benedict). Mifflin-St Jeor is most accurate for average populations. Individual metabolism varies by ±10-20% due to genetics, muscle mass, and metabolism.
How accurate is the TDEE calculation?
The Mifflin-St Jeor formula is about 90% accurate for the general population. However, individual factors like genetics, hormones, sleep, stress, and body composition affect actual expenditure. Use as a starting point; adjust based on 1-2 weeks of tracking.
Should I include exercise calories in my activity level?
The activity multipliers account for BOTH daily activity and exercise. However, if you add "exercise calories" on top of TDEE, you're double-counting. Include all activities in the activity level selection; don't add extra calories for gym time.
Does my TDEE change as I lose weight?
Yes. As weight decreases, BMR decreases (fewer calories to maintain less mass). Recalculate TDEE every 4-6 weeks during weight loss. Adjust calorie target downward to maintain deficit—same calorie intake may become maintenance at lower weight.
Can metabolism slow down from dieting?
Yes, metabolic adaptation occurs. After extended dieting, your body burns slightly fewer calories. This is normal. Combat it by: 1) Having periodic diet breaks, 2) Including resistance training, 3) Prioritizing sleep and stress management, 4) Maintaining adequate protein intake.
What if I'm tracking calories but not seeing results?
1) Verify accuracy of calorie tracking (use scale, food app), 2) Ensure true deficit exists, 3) Check for hidden calories (oils, drinks, condiments), 4) Recalculate TDEE (may have changed), 5) Give it 3-4 weeks (weight fluctuates), 6) Consult a dietitian.
Should I eat the same calories every day?
Not necessary. Weekly average is more important than daily perfection. ±200-300 kcal variance across days is fine. Some people do "flexible eating" (high intake on training days, lower on rest days). Choose consistency approach that works for you.
Can I trust fitness tracker calorie estimates?
Fitness trackers (smartwatches, apps) often overestimate calorie burn by 10-30%. Use as relative measure, not absolute truth. If tracker says 300 kcal burned, estimate 200-250. Prioritize direct tracking (food scale, apps) over device estimates.
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