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

A 45-year-old 150 lb woman should eat approximately 1302 kcal/day to lose about 1 lb per week — a 500 kcal deficit from the maintenance estimate of 1802 kcal.

What is the BMI for a 150 lb woman?

At 150 lbs (68.0 kg) and average height (162.6 cm), the BMI is 25.7 — Overweight ⚠️.

Calorie Guide · Age 45 · 150 lbs

Calories for a 45-Year-Old 150 lb Woman

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

A lightly active 45-year-old 150 lb woman of average height needs approximately 1802 kcal/day to maintain weight. This ranges from 1573 kcal (sedentary) to 2261 kcal (very active).

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

Calorie Needs: 45 years old · 150 lbs · Woman

1311

BMR (at rest)

1573

Sedentary TDEE

1802
Lightly active TDEE

2031

Moderately active

1302

Weight loss target

1802

Maintenance

2102

Muscle gain target

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

Using the Mifflin-St Jeor equation with your exact inputs — age 45, weight 150 lbs (68.0 kg), average woman's height (162.6 cm) — the resting metabolic rate is 1311 kcal/day. With typical daily activity, total calorie expenditure (TDEE) ranges from 1573 kcal (sedentary) to 2261 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	1052 kcal	~1.5 lbs/week
📉 Weight loss	1302 kcal	~1 lb/week
✅ Maintenance	1802 kcal	Weight stable
💪 Lean bulk	2102 kcal	~0.5 lbs/week
🏋️ Aggressive bulk	2302 kcal	~1 lb/week

Calorie Needs by Activity Level

Activity Level	Description	Daily Calories
Sedentary	Desk job, minimal movement	1573 kcal
Lightly active	1–3 workouts/week	1802 kcal
Moderately active	3–5 workouts/week	2031 kcal
Very active	Hard training 6–7 days/week	2261 kcal

BMI at 150 lbs

At 150 lbs (68.0 kg) and average height for a woman (162.6 cm), your BMI is 25.7 — Overweight ⚠️. BMI is a useful screening tool but doesn't measure body composition. Waist circumference and muscle mass provide additional context.

Macronutrient Split at 1802 kcal

Macro	% of Calories	Grams/day	Calories
Protein	30%	135 g	540 kcal
Carbohydrates	40%	180 g	720 kcal
Fat	30%	60 g	540 kcal

For weight loss at 1302 kcal/day, increase protein to 35% (114 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 woman eat per day?A lightly active 45-year-old 150 lb woman needs approximately 1802 kcal/day to maintain weight. This ranges from 1573 kcal (sedentary) to 2261 kcal (very active).

How many calories to lose weight at 150 lbs, age 45?Eat 1302 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 1311 kcal vs 1336 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