What is the BMI for a 100 kg man?

At 100 kg and average height (175.3 cm), the BMI is 32.5 — Obese 🔴.

Calorie Guide · Age 45 · 100 kg

Calories for a 45-Year-Old 100 kg Man

Q: How many calories does a 45-year-old 100 kg man need?

A lightly active 45-year-old 100 kg man of average height needs approximately 2579 kcal/day to maintain weight. Sedentary needs are around 2251 kcal, and very active around 3235 kcal.

Q: How many calories to lose weight at 100 kg, age 45?

A 45-year-old 100 kg man should eat approximately 2079 kcal/day to lose about 0.5 kg per week — a 500 kcal deficit from maintenance.

Exact BMR, TDEE and calorie targets for a 45-year-old man weighing 100 kg (220 lbs).

Calorie Needs: 45 years old · 100 kg · Man

1876

BMR (at rest)

2251

Sedentary TDEE

2579
Lightly active TDEE

2907

Moderately active

2079

Weight loss target

2579

Maintenance

2879

Muscle gain target

How Many Calories Does a 45-Year-Old 100 kg Man Need?

Using the Mifflin-St Jeor equation with your exact inputs — age 45, weight 100 kg (220 lbs), average man's height (175.3 cm) — the resting metabolic rate is 1876 kcal/day. With typical daily activity, total calorie expenditure (TDEE) ranges from 2251 kcal (sedentary) to 3235 kcal (very active).

Age 45 note: After 40, hormonal changes further reduce metabolic rate. Sleep, stress management and strength training become increasingly important for body composition.

Calorie Targets by Goal

Goal	Daily Calories	Expected Result
🔵 Aggressive weight loss	1829 kcal	~0.75 kg/week
📉 Weight loss	2079 kcal	~0.5 kg/week
✅ Maintenance	2579 kcal	Weight stable
💪 Lean bulk	2879 kcal	~0.25 kg/week
🏋️ Aggressive bulk	3079 kcal	~0.5 kg/week

Calorie Needs by Activity Level

Activity Level	Description	Daily Calories
Sedentary	Desk job, minimal movement	2251 kcal
Lightly active	1–3 workouts/week	2579 kcal
Moderately active	3–5 workouts/week	2907 kcal
Very active	Hard training 6–7 days/week	3235 kcal

BMI at 100 kg

At 100 kg and average height for a man (175.3 cm), your BMI is 32.5 — Obese 🔴.

Macronutrient Split at 2579 kcal

Macro	% of Calories	Grams/day	Calories
Protein	30%	193 g	772 kcal
Carbohydrates	40%	258 g	1032 kcal
Fat	30%	86 g	774 kcal

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Frequently Asked Questions

How many calories does a 45-year-old 100 kg man need per day?A lightly active 45-year-old 100 kg man needs approximately 2579 kcal/day to maintain weight. This ranges from 2251 kcal (sedentary) to 3235 kcal (very active).

How many calories to lose weight at 100 kg, age 45?Eat 2079 kcal/day — a 500 kcal deficit from maintenance — to lose approximately 0.5 kg per week. Recalculate every 4–6 weeks as your weight changes.

How does age 45 affect calorie needs compared to age 40?At age 45, BMR is approximately 1876 kcal vs 1901 kcal at age 40 — a difference of 25 kcal/day. Resistance training largely offsets age-related metabolic decline.

Related Calorie Guides

Sources

Mifflin-St Jeor Equation (PubMed) CDC Healthy Weight WHO