What is the BMR for a 27-year-old man?

The estimated BMR (basal metabolic rate) for a 27-year-old man of average height and weight is 1854 kcal/day, calculated using the Mifflin-St Jeor equation.

Calorie Guide · Age 27

Calories for a 27-Year-Old Man

Q: How many calories does a 27-year-old man need?

A lightly active 27-year-old man of average weight and height needs approximately 2549 kcal/day to maintain weight. Sedentary needs are around 2224 kcal, and very active around 3198 kcal.

Q: How many calories should a 27-year-old man eat to lose weight?

A 27-year-old man should eat approximately 2049 kcal/day to lose about 0.5 kg (1 lb) per week. This is a 500 kcal deficit from the estimated maintenance of 2549 kcal.

BMR, TDEE and exact calorie targets for weight loss, maintenance and muscle gain at age 27.

Calorie Needs at Age 27 — Average Man

1854

BMR (at rest)

2224

Sedentary TDEE

2549
Lightly active TDEE

2873

Moderately active

2049

Weight loss target

2549

Maintenance

2849

Muscle gain target

How Many Calories Does a 27-Year-Old Man Need?

Using the Mifflin-St Jeor equation with average US height and weight for a man aged 27, the resting metabolic rate (BMR) is approximately 1854 kcal/day. With typical daily activity included, total calorie expenditure (TDEE) ranges from 2224 kcal (sedentary) to 3198 kcal (very active).

Age 27 note: Metabolism remains strong through your late twenties. This is the best window to build lean muscle mass — it raises your resting BMR long-term.

Calorie Targets by Goal

Goal	Daily Calories	Expected Result
🔵 Aggressive weight loss	1799 kcal	~0.75 kg/week
📉 Weight loss	2049 kcal	~0.5 kg/week
✅ Maintenance	2549 kcal	Weight stable
💪 Lean bulk	2849 kcal	~0.25 kg/week
🏋️ Aggressive bulk	3049 kcal	~0.5 kg/week

Calorie Needs by Activity Level

Activity Level	Description	Daily Calories
Sedentary	Desk job, minimal movement	2224 kcal
Lightly active	1–3 workouts/week	2549 kcal
Moderately active	3–5 workouts/week	2873 kcal
Very active	Hard training 6–7 days/week	3198 kcal

How Metabolism Changes Around Age 27

Metabolic rate declines approximately 1–2% per decade after age 30, driven primarily by muscle loss (sarcopenia) rather than any inherent slowdown. At age 27, your BMR of 1854 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 27
18	1899 kcal	+45 kcal
22	1879 kcal	+25 kcal
27	1854 kcal	—
32	1829 kcal	-25 kcal
37	1804 kcal	-50 kcal

Macronutrient Split at 2549 kcal

Macro	% of Calories	Grams/day	Calories
Protein	30%	191 g	764 kcal
Carbohydrates	40%	255 g	1020 kcal
Fat	30%	85 g	765 kcal

At age 27, 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.

Get personalized calorie targets based on your exact weight, height and activity level.

Calculate My TDEE →

Frequently Asked Questions

How many calories does a 27-year-old man need per day?A lightly active 27-year-old man of average size needs approximately 2549 kcal/day to maintain weight. This ranges from 2224 kcal (sedentary) to 3198 kcal (very active).

How many calories should a 27-year-old man eat to lose weight?Aim for 2049 kcal/day — a 500 kcal deficit from the 2549 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 27 affect how many calories you burn?Yes. Every decade after 30, BMR drops ~1–2% mainly due to muscle loss. At age 27 the estimated BMR is 1854 kcal — compare to 1839 kcal at age 30. Resistance training largely offsets this decline.

Related Age Guides

Sources

WHO CDC Mifflin-St Jeor (PubMed)