Gym or cardio 3–5 times per week. Office job with regular training sessions.
Your TDEE — Total Daily Energy Expenditure
Lose fat
—
kcal/day · 500 deficit
Maintain
—
kcal/day · = TDEE
Build muscle
—
kcal/day · 300 surplus
Protein
—
grams
Carbs
—
grams
Fat
—
grams
What is TDEE?
Your Total Daily Energy Expenditure (TDEE) is the total number of calories your body burns every 24 hours — resting, digesting, moving, and exercising. It is the most important number in nutrition, because everything else follows from it.
This calculator uses the Mifflin-St Jeor equation — the most validated BMR formula in peer-reviewed research — then multiplies by a scientifically established activity factor to produce your TDEE. The rule is simple: eat below your TDEE to lose fat, match it to maintain, exceed it to grow.