How many calories should a 45-year-old 150 lb man eat to lose weight?

A 45-year-old 150 lb man should eat approximately 1640 kcal/day to lose about 1 lb per week — a 500 kcal deficit from the maintenance estimate of 2140 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 45 · 150 lbs

Calories for a 45-Year-Old 150 lb Man

Q: How many calories does a 45-year-old 150 lb man need?

A lightly active 45-year-old 150 lb man of average height needs approximately 2140 kcal/day to maintain weight. This ranges from 1867 kcal (sedentary) to 2684 kcal (very active).

Exact BMR, TDEE and calorie targets for a 45-year-old man weighing 150 lbs (68.0 kg).

Calorie Needs: 45 years old · 150 lbs · Man

1556

BMR (at rest)

1867

Sedentary TDEE

2140
Lightly active TDEE

2412

Moderately active

1640

Weight loss target

2140

Maintenance

2440

Muscle gain target

How Many Calories Does a 45-Year-Old 150 lb Man Need?

Using the Mifflin-St Jeor equation with your exact inputs — age 45, weight 150 lbs (68.0 kg), average man's height (175.3 cm) — the resting metabolic rate is 1556 kcal/day. With typical daily activity, total calorie expenditure (TDEE) ranges from 1867 kcal (sedentary) to 2684 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	1390 kcal	~1.5 lbs/week
📉 Weight loss	1640 kcal	~1 lb/week
✅ Maintenance	2140 kcal	Weight stable
💪 Lean bulk	2440 kcal	~0.5 lbs/week
🏋️ Aggressive bulk	2640 kcal	~1 lb/week

Calorie Needs by Activity Level

Activity Level	Description	Daily Calories
Sedentary	Desk job, minimal movement	1867 kcal
Lightly active	1–3 workouts/week	2140 kcal
Moderately active	3–5 workouts/week	2412 kcal
Very active	Hard training 6–7 days/week	2684 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 2140 kcal

Macro	% of Calories	Grams/day	Calories
Protein	30%	160 g	640 kcal
Carbohydrates	40%	214 g	856 kcal
Fat	30%	71 g	639 kcal

For weight loss at 1640 kcal/day, increase protein to 35% (144 g/day) to preserve muscle during the deficit. At age 45, protein becomes increasingly important for maintaining metabolic rate.

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Frequently Asked Questions

How many calories should a 45-year-old 150 lb man eat per day?A lightly active 45-year-old 150 lb man needs approximately 2140 kcal/day to maintain weight. This ranges from 1867 kcal (sedentary) to 2684 kcal (very active).

How many calories to lose weight at 150 lbs, age 45?Eat 1640 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 45 significantly affect calorie needs vs age 40?At age 45, BMR is approximately 1556 kcal vs 1581 kcal at age 40 — 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