health ToolUpdated 2026-09-19
Calorie Calculator
Calculate your Total Daily Energy Expenditure (TDEE) to know exactly how many calories to consume for weight loss or maintenance.
Important Medical Disclaimer: This health tool is designed solely for informational, screening, and educational purposes. It does not provide medical diagnosis, treatment, or individualized clinical advice. Always consult a qualified physician or healthcare provider regarding any health condition.
Formula & Mathematical Methodology
TDEE = BMR × Activity Multiplier
Multiplies basal metabolic rate by an empirical activity coefficient (1.2 to 1.9).
How to Use This Calorie Calculator
- Enter weight, height, and age.
Step-by-Step Worked Example
Scenario: BMR 1,650 kcal with moderate exercise (× 1.55)
1. 1,650 × 1.55 = 2,557.5 kcal/day maintenance
2. For 0.5 kg/wk weight loss, deduct 500 kcal: 2,058 kcal/day
Final Calculated Result: 2,558 kcal/day maintenance
What Does Your Result Mean?
To lose approximately 1 pound (0.45 kg) per week, aim for a 500-calorie daily deficit below TDEE.
Common Practical Applications:
- Weight management
- Fitness training nutrition
Important Limitations & Assumptions:
- Daily activity varies from day to day; treat results as an ongoing baseline.
Frequently Asked Questions
How many calories are in a pound of fat?
One pound of human body fat stores approximately 3,500 dietary calories.
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