How many calories should a 40-year-old 150 lb man eat to lose weight?

A 40-year-old 150 lb man should eat approximately 1674 kcal/day to lose about 1 lb per week — a 500 kcal deficit from the maintenance estimate of 2174 kcal.

What is the BMI for a 150 lb man?

At 150 lbs (68.0 kg) and average height (175.3 cm), the BMI is 22.1 — Healthy weight ✅.

Calorie Guide · Age 40 · 150 lbs

Calories for a 40-Year-Old 150 lb Man

Q: How many calories does a 40-year-old 150 lb man need?

A lightly active 40-year-old 150 lb man of average height needs approximately 2174 kcal/day to maintain weight. This ranges from 1897 kcal (sedentary) to 2727 kcal (very active).

Exact BMR, TDEE and calorie targets for a 40-year-old man weighing 150 lbs (68.0 kg).

Calorie Needs: 40 years old · 150 lbs · Man

1581

BMR (at rest)

1897

Sedentary TDEE

2174
Lightly active TDEE

2451

Moderately active

1674

Weight loss target

2174

Maintenance

2474

Muscle gain target

How Many Calories Does a 40-Year-Old 150 lb Man Need?

Using the Mifflin-St Jeor equation with your exact inputs — age 40, weight 150 lbs (68.0 kg), average man's height (175.3 cm) — the resting metabolic rate is 1581 kcal/day. With typical daily activity, total calorie expenditure (TDEE) ranges from 1897 kcal (sedentary) to 2727 kcal (very active).

Age 40 note: Your mid-thirties are a critical window: muscle loss accelerates if untrained. Maintaining 1.6–2g protein/kg and consistent training keeps metabolism high.

Calorie Targets by Goal

Goal	Daily Calories	Expected Result
🔵 Aggressive weight loss	1424 kcal	~1.5 lbs/week
📉 Weight loss	1674 kcal	~1 lb/week
✅ Maintenance	2174 kcal	Weight stable
💪 Lean bulk	2474 kcal	~0.5 lbs/week
🏋️ Aggressive bulk	2674 kcal	~1 lb/week

Calorie Needs by Activity Level

Activity Level	Description	Daily Calories
Sedentary	Desk job, minimal movement	1897 kcal
Lightly active	1–3 workouts/week	2174 kcal
Moderately active	3–5 workouts/week	2451 kcal
Very active	Hard training 6–7 days/week	2727 kcal

BMI at 150 lbs

At 150 lbs (68.0 kg) and average height for a man (175.3 cm), your BMI is 22.1 — Healthy weight ✅. BMI is a useful screening tool but doesn't measure body composition. Waist circumference and muscle mass provide additional context.

Macronutrient Split at 2174 kcal

Macro	% of Calories	Grams/day	Calories
Protein	30%	163 g	652 kcal
Carbohydrates	40%	217 g	868 kcal
Fat	30%	72 g	648 kcal

For weight loss at 1674 kcal/day, increase protein to 35% (146 g/day) to preserve muscle during the deficit. At age 40, protein becomes increasingly important for maintaining metabolic rate.

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Frequently Asked Questions

How many calories should a 40-year-old 150 lb man eat per day?A lightly active 40-year-old 150 lb man needs approximately 2174 kcal/day to maintain weight. This ranges from 1897 kcal (sedentary) to 2727 kcal (very active).

How many calories to lose weight at 150 lbs, age 40?Eat 1674 kcal/day for a 500 kcal deficit — approximately 1 lb of fat loss per week. Recalculate your targets every 4–6 weeks as your weight changes.

Does age 40 significantly affect calorie needs vs age 35?At age 40, BMR is approximately 1581 kcal vs 1606 kcal at age 35 — a difference of 25 kcal/day. This is mainly driven by gradual muscle loss over time, which is largely preventable with resistance training.

Related Calorie Guides

Sources

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