What is the BMR for a 64-year-old woman?

The estimated BMR (basal metabolic rate) for a 64-year-old woman of average height and weight is 1271 kcal/day, calculated using the Mifflin-St Jeor equation.

Calorie Guide · Age 64

Calories for a 64-Year-Old Woman

Q: How many calories does a 64-year-old woman need?

A lightly active 64-year-old woman of average weight and height needs approximately 1748 kcal/day to maintain weight. Sedentary needs are around 1525 kcal, and very active around 2193 kcal.

Q: How many calories should a 64-year-old woman eat to lose weight?

A 64-year-old woman should eat approximately 1248 kcal/day to lose about 0.5 kg (1 lb) per week. This is a 500 kcal deficit from the estimated maintenance of 1748 kcal.

BMR, TDEE and exact calorie targets for weight loss, maintenance and muscle gain at age 64.

Calorie Needs at Age 64 — Average Woman

1271

BMR (at rest)

1525

Sedentary TDEE

1748
Lightly active TDEE

1970

Moderately active

1248

Weight loss target

1748

Maintenance

2048

Muscle gain target

How Many Calories Does a 64-Year-Old Woman Need?

Using the Mifflin-St Jeor equation with average US height and weight for a woman aged 64, the resting metabolic rate (BMR) is approximately 1271 kcal/day. With typical daily activity included, total calorie expenditure (TDEE) ranges from 1525 kcal (sedentary) to 2193 kcal (very active).

Age 64 note: Hormonal changes in your fifties reduce metabolic rate and shift fat distribution. Consistent exercise and sleep quality become increasingly important for weight management.

Calorie Targets by Goal

Goal	Daily Calories	Expected Result
🔵 Aggressive weight loss	998 kcal	~0.75 kg/week
📉 Weight loss	1248 kcal	~0.5 kg/week
✅ Maintenance	1748 kcal	Weight stable
💪 Lean bulk	2048 kcal	~0.25 kg/week
🏋️ Aggressive bulk	2248 kcal	~0.5 kg/week

Calorie Needs by Activity Level

Activity Level	Description	Daily Calories
Sedentary	Desk job, minimal movement	1525 kcal
Lightly active	1–3 workouts/week	1748 kcal
Moderately active	3–5 workouts/week	1970 kcal
Very active	Hard training 6–7 days/week	2193 kcal

How Metabolism Changes Around Age 64

Metabolic rate declines approximately 1–2% per decade after age 30, driven primarily by muscle loss (sarcopenia) rather than any inherent slowdown. At age 64, your BMR of 1271 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 64
54	1321 kcal	+50 kcal
59	1296 kcal	+25 kcal
64	1271 kcal	—
69	1246 kcal	-25 kcal
70	1241 kcal	-30 kcal

Macronutrient Split at 1748 kcal

Macro	% of Calories	Grams/day	Calories
Protein	30%	131 g	524 kcal
Carbohydrates	40%	175 g	700 kcal
Fat	30%	58 g	522 kcal

At age 64, 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 64-year-old woman need per day?A lightly active 64-year-old woman of average size needs approximately 1748 kcal/day to maintain weight. This ranges from 1525 kcal (sedentary) to 2193 kcal (very active).

How many calories should a 64-year-old woman eat to lose weight?Aim for 1248 kcal/day — a 500 kcal deficit from the 1748 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 64 affect how many calories you burn?Yes. Every decade after 30, BMR drops ~1–2% mainly due to muscle loss. At age 64 the estimated BMR is 1271 kcal — compare to 1441 kcal at age 30. Resistance training largely offsets this decline.

Related Age Guides

Sources

WHO CDC Mifflin-St Jeor (PubMed)