Calorie Calculator for Teens

Teen Energy Expenditure Equation:

\[ TEE = BMR \times activity\_factor \] \[ BMR = \begin{cases} 88.5 - (61.9 \times age) + PA \times (26.7 \times weight + 903 \times height) & \text{for boys} \\ 135.3 - (30.8 \times age) + PA \times (10.0 \times weight + 934 \times height) & \text{for girls} \end{cases} \]

Gender:

Age:

years

Weight:

Height:

meters

Activity Level:

Basal Metabolic Rate (BMR):

Total Energy Expenditure (TEE):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is the Teen Calorie Calculator?

The Teen Calorie Calculator estimates daily calorie needs for adolescents aged 13-19 using the Estimated Energy Requirement (EER) equations. It calculates both Basal Metabolic Rate (BMR) and Total Energy Expenditure (TEE) based on gender, age, weight, height, and activity level.

2. How Does the Calculator Work?

The calculator uses gender-specific EER equations:

Where:

\( TEE \) — Total Energy Expenditure (kcal/day)
\( BMR \) — Basal Metabolic Rate (kcal/day)
\( age \) — Age in years (13-19)
\( weight \) — Weight in kilograms
\( height \) — Height in meters
\( PA \) — Physical Activity coefficient (same as activity factor)
\( activity\_factor \) — Multiplier based on activity level

Explanation: The equations account for growth and development needs during adolescence, with different coefficients for boys and girls.

3. Importance of Calorie Calculation

Details: Accurate calorie estimation is crucial for supporting healthy growth, maintaining energy balance, and preventing both undernutrition and obesity during the critical adolescent years.

4. Using the Calculator

Tips: Enter accurate weight and height measurements. Select the activity level that best matches your typical week. Results are estimates - individual needs may vary.

5. Frequently Asked Questions (FAQ)

Q1: Why different equations for boys and girls?
A: Boys and girls have different growth patterns and body composition during adolescence, requiring gender-specific equations.

Q2: What if my teen is very athletic?
A: For athletes or highly active teens, the "Very active" option may still underestimate needs - consult a sports nutritionist.

Q3: How often should I recalculate?
A: Recalculate every 3-6 months or after significant changes in weight, height, or activity level.

Q4: Are there limitations to this calculator?
A: It may be less accurate for teens with medical conditions affecting metabolism or those with extreme body compositions.

Q5: Should this be used for weight loss?
A: Teen weight management should be supervised by healthcare professionals to ensure adequate nutrition for growth.