How many calories should a 50-year-old 120 lb woman eat to lose weight?

A 50-year-old 120 lb woman should eat approximately 1081 kcal/day to lose about 1 lb per week — a 500 kcal deficit from the maintenance estimate of 1581 kcal.

What is the BMI for a 120 lb woman?

At 120 lbs (54.4 kg) and average height (162.6 cm), the BMI is 20.6 — Healthy weight ✅.

Calorie Guide · Age 50 · 120 lbs

Calories for a 50-Year-Old 120 lb Woman

Q: How many calories does a 50-year-old 120 lb woman need?

A lightly active 50-year-old 120 lb woman of average height needs approximately 1581 kcal/day to maintain weight. This ranges from 1379 kcal (sedentary) to 1983 kcal (very active).

Exact BMR, TDEE and calorie targets for a 50-year-old woman weighing 120 lbs (54.4 kg).

Calorie Needs: 50 years old · 120 lbs · Woman

1150

BMR (at rest)

1379

Sedentary TDEE

1581
Lightly active TDEE

1782

Moderately active

1081

Weight loss target

1581

Maintenance

1881

Muscle gain target

How Many Calories Does a 50-Year-Old 120 lb Woman Need?

Using the Mifflin-St Jeor equation with your exact inputs — age 50, weight 120 lbs (54.4 kg), average woman's height (162.6 cm) — the resting metabolic rate is 1150 kcal/day. With typical daily activity, total calorie expenditure (TDEE) ranges from 1379 kcal (sedentary) to 1983 kcal (very active).

Age 50 note: In your fifties, protein needs stay high (1.2–1.6g/kg) while calorie needs drop. Prioritizing protein and resistance training prevents the muscle loss that accelerates aging.

Calorie Targets by Goal

Goal	Daily Calories	Expected Result
🔵 Aggressive weight loss	831 kcal	~1.5 lbs/week
📉 Weight loss	1081 kcal	~1 lb/week
✅ Maintenance	1581 kcal	Weight stable
💪 Lean bulk	1881 kcal	~0.5 lbs/week
🏋️ Aggressive bulk	2081 kcal	~1 lb/week

Calorie Needs by Activity Level

Activity Level	Description	Daily Calories
Sedentary	Desk job, minimal movement	1379 kcal
Lightly active	1–3 workouts/week	1581 kcal
Moderately active	3–5 workouts/week	1782 kcal
Very active	Hard training 6–7 days/week	1983 kcal

BMI at 120 lbs

At 120 lbs (54.4 kg) and average height for a woman (162.6 cm), your BMI is 20.6 — 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 1581 kcal

Macro	% of Calories	Grams/day	Calories
Protein	30%	119 g	476 kcal
Carbohydrates	40%	158 g	632 kcal
Fat	30%	53 g	477 kcal

For weight loss at 1081 kcal/day, increase protein to 35% (95 g/day) to preserve muscle during the deficit. At age 50, protein becomes increasingly important for maintaining metabolic rate.

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Frequently Asked Questions

How many calories should a 50-year-old 120 lb woman eat per day?A lightly active 50-year-old 120 lb woman needs approximately 1581 kcal/day to maintain weight. This ranges from 1379 kcal (sedentary) to 1983 kcal (very active).

How many calories to lose weight at 120 lbs, age 50?Eat 1081 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 50 significantly affect calorie needs vs age 45?At age 50, BMR is approximately 1150 kcal vs 1175 kcal at age 45 — 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