Daily Calorie Calculator (TDEE)
Calculate your daily maintenance calories (TDEE), fat-loss calorie deficit targets, and lean muscle-gain surplus using the Mifflin-St Jeor equation.
Informational health estimates only
Outputs from this utility are based on population-level peer-reviewed formulas (WHO, Mifflin-St Jeor, US Navy, Devine) and are intended for educational wellness screening—not medical diagnosis or clinical treatment. Consult a qualified physician or registered dietitian for personalized guidance. Read our full Platform & Medical Disclaimer.
How the Daily Calorie Calculator (TDEE) works
Calculate your daily maintenance calories (TDEE), fat-loss calorie deficit targets, and lean muscle-gain surplus using the Mifflin-St Jeor equation. Below is the exact mathematical or algorithmic model used by this nutrition & energy utility, along with its key operating assumptions.
TDEE = Mifflin-St Jeor BMR × Physical Activity Multiplier (1.2 to 1.9).Step-by-step workflow
- Select your clinical reference standard or biological sex and enter height, weight, or activity metrics in the Daily Calorie Calculator (TDEE).
- The physiological model computes TDEE = Mifflin-St Jeor BMR × Physical Activity Multiplier (1.2 to 1.9). and maps your score against established reference bands.
- Use the target range and daily macro/hydration breakdown as an educational baseline alongside professional medical guidance.
Worked example & key advantages
A moderately active 30-year-old burning 2,500 kcal/day can target ~2,000–2,150 kcal/day for steady fat loss.
Why use this Calorie Calculator tool
- Includes both Asian-Indian (ICMR) and WHO global BMI cutoffs alongside Mifflin-St Jeor and US Navy equations.
- Translates raw metabolic numbers into actionable daily calorie, protein-per-meal, and hydration targets.
- Runs privately in your browser with no account sign-up or health-data tracking.
Important Assumptions & Scope
- 1 kg of body fat corresponds to roughly 7,700 kcal of cumulative energy balance.
Frequently Asked Questions — Calorie Calculator
Clear answers to common questions about methodology, edge cases, and privacy.
How large should my daily calorie deficit be for healthy weight loss?
A moderate deficit of 350 to 500 kcal/day below your TDEE supports sustainable fat loss of ~0.3–0.5 kg per week while preserving muscle.
Are results from the Daily Calorie Calculator (TDEE) a substitute for medical advice?
No. The Daily Calorie Calculator (TDEE) implements peer-reviewed population equations for general wellness education and fitness screening. Always consult a physician or registered dietitian for clinical guidance.
How often should I recalculate my metrics in the Calorie Calculator?
Recalculating every 4 to 8 weeks—or whenever your body weight, training volume, or lifestyle activity level changes significantly—helps keep your nutrition and wellness targets aligned.