Calorie Requirement Per Day Calculator Mayo Clinic

Mifflin-St Jeor Formula:

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

Gender:

Weight:

Height:

Age:

years

Activity Level:

Daily Calorie Requirement:

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1. What Is The Mifflin-St Jeor Formula?

The Mifflin-St Jeor formula is a widely used equation for estimating basal metabolic rate (BMR), which represents the number of calories your body needs at complete rest. It's considered one of the most accurate BMR formulas, especially for obese individuals.

2. How Does The Calculator Work?

The calculator uses the Mifflin-St Jeor formula:

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

Where:

\( weight \) — Body weight in kilograms
\( height \) — Height in centimeters
\( age \) — Age in years
\( s \) — +5 for males, -161 for females
\( activity\;factor \) — Multiplier based on activity level

Explanation: The formula calculates your basal metabolic rate (BMR), then multiplies it by an activity factor to estimate your total daily energy expenditure (TDEE).

3. Importance Of Calorie Requirement Calculation

Details: Knowing your daily calorie needs is essential for weight management, whether your goal is weight loss, maintenance, or gain. It provides a scientific basis for creating personalized nutrition plans.

4. Using The Calculator

Tips: Enter your weight in kilograms, height in centimeters, age in years, select your gender and activity level. For accurate results, use your current measurements and be honest about your activity level.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is the Mifflin-St Jeor formula?
A: It's considered one of the most accurate BMR formulas, with an accuracy of about ±10% for most people. However, individual variations in metabolism can affect results.

Q2: What's the difference between BMR and TDEE?
A: BMR (Basal Metabolic Rate) is the calories your body needs at complete rest. TDEE (Total Daily Energy Expenditure) includes all activities and is typically higher than BMR.

Q3: How often should I recalculate my calorie needs?
A: Recalculate whenever your weight changes significantly (5+ kg), your activity level changes substantially, or every 6 months as part of regular health assessment.

Q4: Are there limitations to this calculation?
A: The formula may be less accurate for athletes with high muscle mass, elderly individuals, pregnant women, and those with certain medical conditions affecting metabolism.

Q5: Should I eat exactly the calculated amount of calories?
A: Use the calculation as a starting point. Monitor your weight changes and adjust accordingly based on your goals and how your body responds.