TDEE Calculator For Teens
Find daily calorie needs for teenagers built on the Mifflin-St Jeor formula. Tuned for growth, sports, and lifelong healthy habits, with macros that support a developing body.
Your Stats
Enter your stats to see your TDEE and macro targets.
What is TDEE for Teens?
Your TDEE is the total number of calories your body burns each day. For teenagers, that number is often higher than adults of the same size because growth itself burns calories. Sports, school PE, and the steady movement of an active teen push it up further.
Most active teen boys land between 2,400 and 3,200 calories per day. Most active teen girls land between 1,900 and 2,400 calories per day. The calculator gives a starting point, but real teens often need more during growth spurts and competitive sport seasons.
- • Active teen boys: 2,400 to 3,200 calories per day
- • Active teen girls: 1,900 to 2,400 calories per day
- • Protein floor: 1.2 to 1.6 g per kg of body weight
- • Goal: Fuel growth, training, and energy levels
How We Calculate a Teen's TDEE
We use the Mifflin-St Jeor equation, then apply your activity multiplier. The formula is built on adult data, so growing and active teens may need to add 10 to 25 percent on top of the result.
Calculate BMR
10 × kg + 6.25 × cm − 5 × age, plus 5 for boys or minus 161 for girls. This is the resting calorie burn.
Apply Activity Multiplier
From 1.2 sedentary up to 1.9 very active. Sports, PE, and daily walking all count.
Adjust for Growth
Add 10 to 25 percent if you are in a growth spurt, training hard, or noticing constant hunger.
Factors That Shape a Teen's Calorie Needs
These are the variables that move a teenager's TDEE the most.
Growth Phase
Growth spurts can add 300 to 600 calories per day on top of the formula. Hunger usually tracks the spurt.
Sports and Training
Practice plus games can add 500 to 1,200 calories per day for competitive teen athletes.
Age and Sex
Older teens approach adult TDEE numbers. Boys typically run higher than girls of the same weight after puberty.
Food Quality
Whole foods with protein, fruit, vegetables, and whole grains support growth far better than mostly processed food at the same calories.
Strength Training
Lifting builds muscle that quietly raises long term calorie needs and supports bone density during teen years.
Sleep
Teens need 8 to 10 hours of sleep. Short sleep cuts hunger control, recovery, and growth hormone release.
Tips for Teens Using TDEE
- 1
Eat to Fuel, Not to Restrict
The teen years are about growth, not dieting. Aim to fuel sport, school, and recovery with real food.
- 2
Hit Protein at Every Meal
20 to 40 grams of protein at each meal supports lean growth and recovery from training.
- 3
Eat Enough on Training Days
Two-a-days, games, and long practices need extra carbs. A peanut butter sandwich or fruit before practice goes a long way.
- 4
Sleep 8 to 10 Hours
Sleep is when growth and recovery happen. Skip it and the calorie target stops working.
- 5
Limit Ultra Processed Food
Soda, candy, and chips push calories up without supporting growth. Keep them as treats, not staples.
- 6
Talk to a Pro if Weight is a Concern
Pediatricians and sports dietitians can guide goals safely. Skip extreme diets and online calorie cuts.
Teen TDEE Calculator FAQ
Quick answers to the questions people ask most.