About TDEE Calculator

Your trusted tool for calculating Total Daily Energy Expenditure

What is TDEE?

Total Daily Energy Expenditure (TDEE) is the total number of calories you burn in a day, accounting for all activities including exercise, daily movement, and basic bodily functions. Understanding your TDEE is crucial for achieving your fitness goals, whether you want to lose weight, maintain your current weight, or build muscle.

Our calculator uses the scientifically-validated Mifflin-St Jeor Equation to calculate your Basal Metabolic Rate (BMR), then applies activity multipliers to determine your total daily calorie needs.

How It Works

1. Calculate BMR

We first calculate your Basal Metabolic Rate (BMR) using the Mifflin-St Jeor Equation, which considers your age, weight, height, and biological sex.

2. Apply Activity Level

Your BMR is multiplied by an activity factor based on your lifestyle and exercise habits, ranging from sedentary to very active.

3. Adjust for Goals

Based on your fitness goal (weight loss, maintenance, or muscle gain), we adjust your calorie target to help you achieve your objectives safely and effectively.

4. Calculate Macronutrients

We provide a breakdown of recommended protein, carbohydrates, and fats to help you meet your calorie goals with balanced nutrition.

Features

  • ✓Scientific Accuracy: Uses the Mifflin-St Jeor Equation, recognized as one of the most accurate BMR formulas
  • ✓Flexible Units: Switch between metric (kg, cm) and imperial (lbs, inches) systems
  • ✓Personalized Goals: Tailored recommendations for weight loss, maintenance, or muscle gain
  • ✓Macronutrient Breakdown: Detailed protein, carbs, and fat recommendations
  • ✓Calculation History: Track your progress over time with saved calculations
  • ✓Privacy First: All calculations are performed locally in your browser

Your Privacy Matters

This TDEE Calculator is a completely client-side application. All calculations are performed directly in your browser, and no data is sent to any server. Your personal information and calculation history are stored locally on your device using browser localStorage.

We believe your health data should remain private and under your control.

Important Disclaimer

This calculator provides estimates based on established scientific formulas. However, individual metabolic rates can vary due to factors such as genetics, hormones, medications, and health conditions.

The results should be used as a starting point and adjusted based on your real-world results. Monitor your progress over several weeks and adjust your calorie intake accordingly.

Always consult with a healthcare professional or registered dietitian before making significant changes to your diet or exercise routine, especially if you have any medical conditions.

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