Smart Calorie & TDEE Calculator
Calculate your exact daily calorie needs, BMR, and personalized macronutrient breakdown using the science-backed Mifflin-St Jeor equation.
50K+
Calculations
99%
Accuracy
Free
Always
What is TDEE and Why Track Your Calories?
Your Total Daily Energy Expenditure (TDEE) is the total number of calories your body burns each day. It combines your Basal Metabolic Rate (BMR) with your activity level. Understanding your TDEE is the foundation of any successful nutrition plan, whether your goal is fat loss, muscle gain, or maintaining a healthy weight.
TDEE Calculation
Accurate daily energy expenditure based on your lifestyle
BMR Analysis
Your baseline metabolic rate at complete rest
Macro Breakdown
Optimal protein, carbs, and fat ratios for your goal
Goal Planning
Realistic timelines and personalized strategies
How to Use
- Select your gender and enter basic measurements
- Choose your activity level and fitness goal
- Click "Calculate My Calories" for your personalized plan
Calculate Your Calories
Fill in your details for accurate results
Understanding BMR vs TDEE
BMR
Basal Metabolic Rate is the energy your body needs at complete rest to maintain vital functions like breathing, circulation, and cell production.
TDEE
Total Daily Energy Expenditure accounts for all activity on top of BMR including exercise, walking, and even digesting food (thermic effect).
How We Calculate Your Macros
For weight loss, we recommend higher protein (40%) to preserve muscle mass with moderate carbs (30%) and fats (30%). For muscle gain, carbs increase to 45% to fuel workouts while protein stays high at 35%. Maintenance uses a balanced 30/40/30 split.
Important Considerations
These calculations provide estimates based on the Mifflin-St Jeor equation. Individual metabolism varies based on genetics, hormones, muscle mass, and other factors. Consult a healthcare professional or registered dietitian for personalized nutrition advice, especially if you have medical conditions.
Ready to find your numbers? Use the calculator above to get started.
Frequently Asked Questions
What is TDEE and why is it important?
TDEE (Total Daily Energy Expenditure) is the total number of calories you burn daily including all activities. Knowing your TDEE helps you create an effective caloric deficit for weight loss or surplus for muscle gain.
How accurate is the Mifflin-St Jeor equation?
The Mifflin-St Jeor equation is considered the most accurate predictive equation for BMR, with an accuracy of about 80-90% for most people. It replaced the older Harris-Benedict equation in most clinical settings.
How much weight can I safely lose per week?
A safe and sustainable rate of weight loss is 0.5-1kg (1-2 lbs) per week. This typically requires a daily deficit of 500-1000 calories. Faster weight loss can lead to muscle loss and metabolic adaptation.
Should I eat back calories burned during exercise?
Since TDEE already accounts for your activity level, you generally don't need to eat back exercise calories separately. However, if you do unusually intense workouts beyond your selected activity level, a small additional snack (100-200 cal) can help recovery.
How often should I recalculate my TDEE?
Recalculate every 4-6 weeks or whenever your weight changes by more than 2-3 kg. As you lose or gain weight, your BMR changes, so your calorie targets should be adjusted accordingly.
Ready to Transform Your Nutrition?
Get your personalized calorie and macro targets in seconds. It is completely free and science-backed.