What is the BMR for a 50-year-old woman?

The estimated BMR (basal metabolic rate) for a 50-year-old woman of average height and weight is 1341 kcal/day, calculated using the Mifflin-St Jeor equation.

Calorie Guide · Age 50

Calories for a 50-Year-Old Woman

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

A lightly active 50-year-old woman of average weight and height needs approximately 1844 kcal/day to maintain weight. Sedentary needs are around 1609 kcal, and very active around 2313 kcal.

Q: How many calories should a 50-year-old woman eat to lose weight?

A 50-year-old woman should eat approximately 1344 kcal/day to lose about 0.5 kg (1 lb) per week. This is a 500 kcal deficit from the estimated maintenance of 1844 kcal.

BMR, TDEE and exact calorie targets for weight loss, maintenance and muscle gain at age 50.

Calorie Needs at Age 50 — Average Woman

1341

BMR (at rest)

1609

Sedentary TDEE

1844
Lightly active TDEE

2079

Moderately active

1344

Weight loss target

1844

Maintenance

2144

Muscle gain target

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

Using the Mifflin-St Jeor equation with average US height and weight for a woman aged 50, the resting metabolic rate (BMR) is approximately 1341 kcal/day. With typical daily activity included, total calorie expenditure (TDEE) ranges from 1609 kcal (sedentary) to 2313 kcal (very active).

Age 50 note: After 40, muscle loss (sarcopenia) accelerates if untrained. Strength training 2–3×/week and higher protein intake (1 g/lb) are the most effective countermeasures.

Calorie Targets by Goal

Goal	Daily Calories	Expected Result
🔵 Aggressive weight loss	1094 kcal	~0.75 kg/week
📉 Weight loss	1344 kcal	~0.5 kg/week
✅ Maintenance	1844 kcal	Weight stable
💪 Lean bulk	2144 kcal	~0.25 kg/week
🏋️ Aggressive bulk	2344 kcal	~0.5 kg/week

Calorie Needs by Activity Level

Activity Level	Description	Daily Calories
Sedentary	Desk job, minimal movement	1609 kcal
Lightly active	1–3 workouts/week	1844 kcal
Moderately active	3–5 workouts/week	2079 kcal
Very active	Hard training 6–7 days/week	2313 kcal

How Metabolism Changes Around Age 50

Metabolic rate declines approximately 1–2% per decade after age 30, driven primarily by muscle loss (sarcopenia) rather than any inherent slowdown. At age 50, your BMR of 1341 kcal reflects your current muscle mass, height and hormonal status. The single most effective way to maintain or raise your BMR is resistance training — each kilogram of lean muscle burns roughly 13 kcal/day at rest.

Age	Estimated BMR (woman)	Change vs age 50
40	1391 kcal	+50 kcal
45	1366 kcal	+25 kcal
50	1341 kcal	—
55	1316 kcal	-25 kcal
60	1291 kcal	-50 kcal

Macronutrient Split at 1844 kcal

Macro	% of Calories	Grams/day	Calories
Protein	30%	138 g	552 kcal
Carbohydrates	40%	184 g	736 kcal
Fat	30%	61 g	549 kcal

At age 50, protein intake is especially important. Aim for at least 60–74 g/day to maintain muscle mass, whether you're in a deficit, at maintenance, or in a surplus.

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Frequently Asked Questions

How many calories does a 50-year-old woman need per day?A lightly active 50-year-old woman of average size needs approximately 1844 kcal/day to maintain weight. This ranges from 1609 kcal (sedentary) to 2313 kcal (very active).

How many calories should a 50-year-old woman eat to lose weight?Aim for 1344 kcal/day — a 500 kcal deficit from the 1844 kcal maintenance estimate — to lose approximately 0.5 kg per week. Never go below 1200 kcal (women) or 1500 kcal (men) for extended periods.

Does age 50 affect how many calories you burn?Yes. Every decade after 30, BMR drops ~1–2% mainly due to muscle loss. At age 50 the estimated BMR is 1341 kcal — compare to 1441 kcal at age 30. Resistance training largely offsets this decline.

Related Age Guides

Sources

WHO CDC Mifflin-St Jeor (PubMed)