Daily Calorie Needs — Male, 80kg, 178cm, Age 30
For a 30-year-old male, 80kg, 178cm tall, lightly active: BMR = 1768 kcal/day, TDEE = 2431 kcal/day. To lose weight: eat 1931 kcal. To gain weight: eat 2731 kcal.
BMR
1,699 cal
Basal Metabolic Rate
Maintenance
2,633 cal
Weight Loss (-500)
2,133 cal
Weight Gain (+500)
3,133 cal
Mifflin-St Jeor equation — most accurate for adults. A 500 cal/day deficit leads to ~0.5 kg/week loss. Sedentary = desk job, Light = 1-3 days exercise, Moderate = 3-5 days, Active = 6-7 days, Very Active = athlete.
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Common questions about Daily Calorie Needs — Male, 80kg, 178cm, Age 30
How many calories should a 30-year-old man of 80kg eat per day?
Your BMR (basal metabolic rate) is 1768 kcal/day — the calories needed at complete rest. With lightly active lifestyle, your TDEE (total daily energy expenditure) is 2431 kcal/day. To lose ~0.5kg/week, eat 1931 kcal. To gain muscle, eat 2731 kcal.
What is the difference between BMR and TDEE?
BMR (Basal Metabolic Rate) is the calories your body needs at complete rest to maintain basic functions like breathing and circulation. TDEE (Total Daily Energy Expenditure) multiplies BMR by an activity factor. At sedentary, TDEE ≈ 1.2× BMR; at very active, TDEE ≈ 1.725× BMR. Your TDEE is 2431 kcal vs BMR of 1768 kcal.