What is the BMI for a 55 kg woman?

At 55 kg and average height (162.6 cm), the BMI is 20.8 — Healthy weight ✅.

Calorie Guide · Age 40 · 55 kg

Calories for a 40-Year-Old 55 kg Woman

Q: How many calories does a 40-year-old 55 kg woman need?

A lightly active 40-year-old 55 kg woman of average height needs approximately 1657 kcal/day to maintain weight. Sedentary needs are around 1446 kcal, and very active around 2079 kcal.

Q: How many calories to lose weight at 55 kg, age 40?

A 40-year-old 55 kg woman should eat approximately 1157 kcal/day to lose about 0.5 kg per week — a 500 kcal deficit from maintenance.

Exact BMR, TDEE and calorie targets for a 40-year-old woman weighing 55 kg (121 lbs).

Calorie Needs: 40 years old · 55 kg · Woman

1205

BMR (at rest)

1446

Sedentary TDEE

1657
Lightly active TDEE

1868

Moderately active

1157

Weight loss target

1657

Maintenance

1957

Muscle gain target

How Many Calories Does a 40-Year-Old 55 kg Woman Need?

Using the Mifflin-St Jeor equation with your exact inputs — age 40, weight 55 kg (121 lbs), average woman's height (162.6 cm) — the resting metabolic rate is 1205 kcal/day. With typical daily activity, total calorie expenditure (TDEE) ranges from 1446 kcal (sedentary) to 2079 kcal (very active).

Age 40 note: Your mid-thirties are a critical window: muscle loss accelerates if untrained. Maintaining 1.6–2g protein/kg and consistent training keeps metabolism high.

Calorie Targets by Goal

Goal	Daily Calories	Expected Result
🔵 Aggressive weight loss	907 kcal	~0.75 kg/week
📉 Weight loss	1157 kcal	~0.5 kg/week
✅ Maintenance	1657 kcal	Weight stable
💪 Lean bulk	1957 kcal	~0.25 kg/week
🏋️ Aggressive bulk	2157 kcal	~0.5 kg/week

Calorie Needs by Activity Level

Activity Level	Description	Daily Calories
Sedentary	Desk job, minimal movement	1446 kcal
Lightly active	1–3 workouts/week	1657 kcal
Moderately active	3–5 workouts/week	1868 kcal
Very active	Hard training 6–7 days/week	2079 kcal

BMI at 55 kg

At 55 kg and average height for a woman (162.6 cm), your BMI is 20.8 — Healthy weight ✅.

Macronutrient Split at 1657 kcal

Macro	% of Calories	Grams/day	Calories
Protein	30%	124 g	496 kcal
Carbohydrates	40%	166 g	664 kcal
Fat	30%	55 g	495 kcal

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Frequently Asked Questions

How many calories does a 40-year-old 55 kg woman need per day?A lightly active 40-year-old 55 kg woman needs approximately 1657 kcal/day to maintain weight. This ranges from 1446 kcal (sedentary) to 2079 kcal (very active).

How many calories to lose weight at 55 kg, age 40?Eat 1157 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 40 affect calorie needs compared to age 35?At age 40, BMR is approximately 1205 kcal vs 1230 kcal at age 35 — 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