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Enter your values in the input fields and the Calorie Calculator (Mifflin-St Jeor) will automatically calculate results in real-time. All calculations are performed instantly in your browser.

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Calorie Calculator (Mifflin-St Jeor)

Calculate daily calorie needs using the Mifflin-St Jeor equation. The most accurate BMR formula for weight management planning.

Logic Verified

Configure parametersUpdated: Feb 2026

Gender0 - 1

Age18 - 120

Weight (lbs)80 - 100000

Height (Feet)4 - 100000

Height (Inches)0 - 11

Activity Level1.2 - 1.9

Maintenance Calories

Weight Loss (-1lb/week)

Weight Gain (+0.5lb/week)

Chart

Data

Value

Expert Analysis & Methodology

Strategic Optimization

Based on your inputs, small adjustments in Gender could improve your outcome significantly.

Calorie Calculator (Mifflin-St Jeor)

Weight management comes down to energy balance: Calories In vs. Calories Out. This tool determines your Total Daily Energy Expenditure (TDEE).

The Formula

We use the Mifflin-St Jeor Equation, widely considered the gold standard for clinical accuracy.

Professional health Consultation

Need an expert opinion on your Calorie Calculator (Mifflin-St Jeor) results? Connect with a verified specialist.

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Disclaimer

This calculator is provided for educational and informational purposes only. It does not constitute professional legal, financial, medical, or engineering advice. While we strive for accuracy, results are estimates based on the inputs provided and should not be relied upon for making significant decisions. Please consult a qualified professional (lawyer, accountant, doctor, etc.) to verify your specific situation. CalculateThis.ai disclaims any liability for damages resulting from the use of this tool.