How many calories should a 50-year-old 170 lb woman eat to lose weight?

A 50-year-old 170 lb woman should eat approximately 1392 kcal/day to lose about 1 lb per week — a 500 kcal deficit from the maintenance estimate of 1892 kcal.

What is the BMI for a 170 lb woman?

At 170 lbs (77.1 kg) and average height (162.6 cm), the BMI is 29.2 — Overweight ⚠️.

Calorie Guide · Age 50 · 170 lbs

Calories for a 50-Year-Old 170 lb Woman

Q: How many calories does a 50-year-old 170 lb woman need?

A lightly active 50-year-old 170 lb woman of average height needs approximately 1892 kcal/day to maintain weight. This ranges from 1652 kcal (sedentary) to 2374 kcal (very active).

Exact BMR, TDEE and calorie targets for a 50-year-old woman weighing 170 lbs (77.1 kg).

Calorie Needs: 50 years old · 170 lbs · Woman

1376

BMR (at rest)

1652

Sedentary TDEE

1892
Lightly active TDEE

2133

Moderately active

1392

Weight loss target

1892

Maintenance

2192

Muscle gain target

How Many Calories Does a 50-Year-Old 170 lb Woman Need?

Using the Mifflin-St Jeor equation with your exact inputs — age 50, weight 170 lbs (77.1 kg), average woman's height (162.6 cm) — the resting metabolic rate is 1376 kcal/day. With typical daily activity, total calorie expenditure (TDEE) ranges from 1652 kcal (sedentary) to 2374 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	1142 kcal	~1.5 lbs/week
📉 Weight loss	1392 kcal	~1 lb/week
✅ Maintenance	1892 kcal	Weight stable
💪 Lean bulk	2192 kcal	~0.5 lbs/week
🏋️ Aggressive bulk	2392 kcal	~1 lb/week

Calorie Needs by Activity Level

Activity Level	Description	Daily Calories
Sedentary	Desk job, minimal movement	1652 kcal
Lightly active	1–3 workouts/week	1892 kcal
Moderately active	3–5 workouts/week	2133 kcal
Very active	Hard training 6–7 days/week	2374 kcal

BMI at 170 lbs

At 170 lbs (77.1 kg) and average height for a woman (162.6 cm), your BMI is 29.2 — Overweight ⚠️. BMI is a useful screening tool but doesn't measure body composition. Waist circumference and muscle mass provide additional context.

Macronutrient Split at 1892 kcal

Macro	% of Calories	Grams/day	Calories
Protein	30%	142 g	568 kcal
Carbohydrates	40%	189 g	756 kcal
Fat	30%	63 g	567 kcal

For weight loss at 1392 kcal/day, increase protein to 35% (122 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 170 lb woman eat per day?A lightly active 50-year-old 170 lb woman needs approximately 1892 kcal/day to maintain weight. This ranges from 1652 kcal (sedentary) to 2374 kcal (very active).

How many calories to lose weight at 170 lbs, age 50?Eat 1392 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 1376 kcal vs 1401 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