Free Calorie Calculator (BMR & TDEE) for Weight Loss, Maintenance & Muscle Gain
Use this science-based calorie calculator to estimate your daily calorie needs using the Mifflin-St Jeor equation. Plan fat loss, weight maintenance, or muscle gain with accurate TDEE results.
Calorie Calculator
Precision Calorie & TDEE Engine
Biometric Parameters
| Gender | |
| Age | |
| Height (cm) | |
| Weight (kg) | |
| Activity |
How the Calorie Calculator Works (BMR & TDEE Formula)
This tool calculates your Basal Metabolic Rate (BMR) using the Mifflin-St Jeor equation and multiplies it by your activity level to estimate Total Daily Energy Expenditure (TDEE).
Why use this calculator?
- Plan safe and effective weight loss or gain
- Understand your daily calorie requirements
- Improve fitness and diet tracking accuracy
- Avoid under-eating or overeating
TDEE = BMR × Activity Level
Medical & Health Disclaimer
This calorie calculator provides estimated results based on standard scientific formulas. It is intended for educational and informational purposes only.
Results are most accurate for adults aged 15–80 years. It should not be used for children or clinical diagnosis.
Individual calorie needs vary due to metabolism, genetics, muscle mass, hormone levels, and lifestyle factors.
This tool does not replace medical advice. Always consult a qualified healthcare professional before making dietary changes.
Calorie Calculator FAQ
A calorie calculator estimates daily calorie needs based on age, weight, height, gender, and activity level.
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