What is the BMR for a 70-year-old man?

The estimated BMR (basal metabolic rate) for a 70-year-old man of average height and weight is 1639 kcal/day, calculated using the Mifflin-St Jeor equation.

Calorie Guide · Age 70

Calories for a 70-Year-Old Man

Q: How many calories does a 70-year-old man need?

A lightly active 70-year-old man of average weight and height needs approximately 2253 kcal/day to maintain weight. Sedentary needs are around 1966 kcal, and very active around 2827 kcal.

Q: How many calories should a 70-year-old man eat to lose weight?

A 70-year-old man should eat approximately 1753 kcal/day to lose about 0.5 kg (1 lb) per week. This is a 500 kcal deficit from the estimated maintenance of 2253 kcal.

BMR, TDEE and exact calorie targets for weight loss, maintenance and muscle gain at age 70.

Calorie Needs at Age 70 — Average Man

1639

BMR (at rest)

1966

Sedentary TDEE

2253
Lightly active TDEE

2540

Moderately active

1753

Weight loss target

2253

Maintenance

2553

Muscle gain target

How Many Calories Does a 70-Year-Old Man Need?

Using the Mifflin-St Jeor equation with average US height and weight for a man aged 70, the resting metabolic rate (BMR) is approximately 1639 kcal/day. With typical daily activity included, total calorie expenditure (TDEE) ranges from 1966 kcal (sedentary) to 2827 kcal (very active).

Age 70 note: After 65, calorie needs drop but protein needs stay high or increase to prevent muscle loss. Aim for 1–1.2 g/kg of protein and stay active to preserve functional strength.

Calorie Targets by Goal

Goal	Daily Calories	Expected Result
🔵 Aggressive weight loss	1503 kcal	~0.75 kg/week
📉 Weight loss	1753 kcal	~0.5 kg/week
✅ Maintenance	2253 kcal	Weight stable
💪 Lean bulk	2553 kcal	~0.25 kg/week
🏋️ Aggressive bulk	2753 kcal	~0.5 kg/week

Calorie Needs by Activity Level

Activity Level	Description	Daily Calories
Sedentary	Desk job, minimal movement	1966 kcal
Lightly active	1–3 workouts/week	2253 kcal
Moderately active	3–5 workouts/week	2540 kcal
Very active	Hard training 6–7 days/week	2827 kcal

How Metabolism Changes Around Age 70

Metabolic rate declines approximately 1–2% per decade after age 30, driven primarily by muscle loss (sarcopenia) rather than any inherent slowdown. At age 70, your BMR of 1639 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 (man)	Change vs age 70
60	1689 kcal	+50 kcal
65	1664 kcal	+25 kcal
70	1639 kcal	—
70	1639 kcal	—
70	1639 kcal	—

Macronutrient Split at 2253 kcal

Macro	% of Calories	Grams/day	Calories
Protein	30%	169 g	676 kcal
Carbohydrates	40%	225 g	900 kcal
Fat	30%	75 g	675 kcal

At age 70, protein intake is especially important. Aim for at least 71–89 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 70-year-old man need per day?A lightly active 70-year-old man of average size needs approximately 2253 kcal/day to maintain weight. This ranges from 1966 kcal (sedentary) to 2827 kcal (very active).

How many calories should a 70-year-old man eat to lose weight?Aim for 1753 kcal/day — a 500 kcal deficit from the 2253 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 70 affect how many calories you burn?Yes. Every decade after 30, BMR drops ~1–2% mainly due to muscle loss. At age 70 the estimated BMR is 1639 kcal — compare to 1839 kcal at age 30. Resistance training largely offsets this decline.

Related Age Guides

Sources

WHO CDC Mifflin-St Jeor (PubMed)