Best TDEE Calculator Mifflin St Jeor

Mifflin-St Jeor Equation:

\[ TDEE = (10 \times weight + 6.25 \times height - 5 \times age - 161) \times activity\ factor \]

Weight:

Height:

Age:

years

Gender:

Activity Level:

Total Daily Energy Expenditure (TDEE):

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1. What is the Mifflin-St Jeor Equation?

The Mifflin-St Jeor equation is considered one of the most accurate formulas for calculating Basal Metabolic Rate (BMR), which represents the number of calories your body needs at complete rest. When multiplied by an activity factor, it provides your Total Daily Energy Expenditure (TDEE).

2. How Does the Calculator Work?

The calculator uses the Mifflin-St Jeor equation:

\[ TDEE = (10 \times weight + 6.25 \times height - 5 \times age - 161) \times activity\ factor \]

Where:

\( weight \) — Body weight in kilograms (kg)
\( height \) — Height in centimeters (cm)
\( age \) — Age in years
\( activity\ factor \) — Multiplier based on physical activity level

Note: For males, the equation uses +5 instead of -161 at the end.

3. Importance of TDEE Calculation

Details: Knowing your TDEE is essential for weight management, whether your goal is weight loss, maintenance, or muscle gain. It helps determine appropriate calorie intake for your specific needs and activity level.

4. Using the Calculator

Tips: Enter your weight in kg, height in cm, age in years, select your gender, and choose your activity level based on your weekly exercise routine. All values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why is Mifflin-St Jeor considered the best TDEE equation?
A: Research shows it's more accurate than other equations like Harris-Benedict, especially for obese individuals, with an accuracy rate of about 90%.

Q2: How often should I recalculate my TDEE?
A: Recalculate every 4-6 weeks if your weight changes significantly, or if your activity level changes substantially.

Q3: What if I'm pregnant or breastfeeding?
A: This equation may not be accurate during pregnancy or breastfeeding. Consult with a healthcare provider for appropriate calorie recommendations.

Q4: Are there limitations to this equation?
A: It may be less accurate for extremely muscular individuals, elderly populations, or those with certain medical conditions affecting metabolism.

Q5: Should I eat exactly at my TDEE for maintenance?
A: TDEE provides an estimate. Monitor your weight over time and adjust your calorie intake based on your actual results and goals.