Calorie & TDEE Calculator
Calculate your daily calorie needs for weight loss or maintenance.
Maintenance Calories (TDEE)
2,500
Calories per day
Loss (0.5kg/wk)
2,000
Gain (0.5kg/wk)
3,000
Clinical Foundations & Calculation Architecture: Calorie & TDEE Calculator
Proactive wellness and fitness conditioning depend on reliable physiological mathematics. Our Calorie & TDEE Calculator provides individuals, athletes, and nutritionists with immediate, clinically recognized calculations completely free of cost.
Physiological Models & Formulas
Depending on your selected metric, calculations are evaluated using validated clinical standards:
- Body Mass Index (BMI): Evaluated using the standard World Health Organization formula: \(\text{BMI} = \frac{\text{weight (kg)}}{(\text{height (m)})^2}\), categorizing results across Underweight (<18.5), Normal (18.5–24.9), Overweight (25–29.9), and Obese (≥30).
- Basal Metabolic Rate (BMR): Calculated using the Mifflin-St Jeor equation, widely acknowledged as the most accurate standard for predicting resting energy expenditure in healthy adults.
- Pregnancy Gestation: Based on Naegele’s clinical rule calculating estimated delivery dates 280 days from the onset of the last menstrual period (LMP).
100% In-Browser Biometric Security
Biometric variables such as body mass, age, and menstrual cycles constitute sensitive health metrics. While mobile apps frequently monetize personal health metrics through third-party advertising SDKs, Free Qube executes all calculations entirely in your browser's local sandbox memory. Zero biometric data points are ever logged, tracked, or sent to external servers.