What is the BMI for a 55 kg man?

At 55 kg and average height (175.3 cm), the BMI is 17.9 — Underweight 🔵.

Calorie Guide · Age 25 · 55 kg

Calories for a 25-Year-Old 55 kg Man

Q: How many calories does a 25-year-old 55 kg man need?

A lightly active 25-year-old 55 kg man of average height needs approximately 2098 kcal/day to maintain weight. Sedentary needs are around 1831 kcal, and very active around 2632 kcal.

Q: How many calories to lose weight at 55 kg, age 25?

A 25-year-old 55 kg man should eat approximately 1598 kcal/day to lose about 0.5 kg per week — a 500 kcal deficit from maintenance.

Exact BMR, TDEE and calorie targets for a 25-year-old man weighing 55 kg (121 lbs).

Calorie Needs: 25 years old · 55 kg · Man

1526

BMR (at rest)

1831

Sedentary TDEE

2098
Lightly active TDEE

2365

Moderately active

1598

Weight loss target

2098

Maintenance

2398

Muscle gain target

How Many Calories Does a 25-Year-Old 55 kg Man Need?

Using the Mifflin-St Jeor equation with your exact inputs — age 25, weight 55 kg (121 lbs), average man's height (175.3 cm) — the resting metabolic rate is 1526 kcal/day. With typical daily activity, total calorie expenditure (TDEE) ranges from 1831 kcal (sedentary) to 2632 kcal (very active).

Age 25 note: In your mid-twenties, metabolism is near its peak. This is an ideal time to build muscle mass, which raises your resting BMR permanently.

Calorie Targets by Goal

Goal	Daily Calories	Expected Result
🔵 Aggressive weight loss	1348 kcal	~0.75 kg/week
📉 Weight loss	1598 kcal	~0.5 kg/week
✅ Maintenance	2098 kcal	Weight stable
💪 Lean bulk	2398 kcal	~0.25 kg/week
🏋️ Aggressive bulk	2598 kcal	~0.5 kg/week

Calorie Needs by Activity Level

Activity Level	Description	Daily Calories
Sedentary	Desk job, minimal movement	1831 kcal
Lightly active	1–3 workouts/week	2098 kcal
Moderately active	3–5 workouts/week	2365 kcal
Very active	Hard training 6–7 days/week	2632 kcal

BMI at 55 kg

At 55 kg and average height for a man (175.3 cm), your BMI is 17.9 — Underweight 🔵.

Macronutrient Split at 2098 kcal

Macro	% of Calories	Grams/day	Calories
Protein	30%	157 g	628 kcal
Carbohydrates	40%	210 g	840 kcal
Fat	30%	70 g	630 kcal

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Frequently Asked Questions

How many calories does a 25-year-old 55 kg man need per day?A lightly active 25-year-old 55 kg man needs approximately 2098 kcal/day to maintain weight. This ranges from 1831 kcal (sedentary) to 2632 kcal (very active).

How many calories to lose weight at 55 kg, age 25?Eat 1598 kcal/day — a 500 kcal deficit from maintenance — to lose approximately 0.5 kg per week. Recalculate every 4–6 weeks as your weight changes.

How does age 25 affect calorie needs compared to age 20?At age 25, BMR is approximately 1526 kcal vs 1551 kcal at age 20 — a difference of 25 kcal/day. Resistance training largely offsets age-related metabolic decline.

Related Calorie Guides

Sources

Mifflin-St Jeor Equation (PubMed) CDC Healthy Weight WHO