What is the BMR for a 23-year-old woman?

The estimated BMR (basal metabolic rate) for a 23-year-old woman of average height and weight is 1476 kcal/day, calculated using the Mifflin-St Jeor equation.

Calorie Guide · Age 23

Calories for a 23-Year-Old Woman

Q: How many calories does a 23-year-old woman need?

A lightly active 23-year-old woman of average weight and height needs approximately 2030 kcal/day to maintain weight. Sedentary needs are around 1771 kcal, and very active around 2546 kcal.

Q: How many calories should a 23-year-old woman eat to lose weight?

A 23-year-old woman should eat approximately 1530 kcal/day to lose about 0.5 kg (1 lb) per week. This is a 500 kcal deficit from the estimated maintenance of 2030 kcal.

BMR, TDEE and exact calorie targets for weight loss, maintenance and muscle gain at age 23.

Calorie Needs at Age 23 — Average Woman

1476

BMR (at rest)

1771

Sedentary TDEE

2030
Lightly active TDEE

2288

Moderately active

1530

Weight loss target

2030

Maintenance

2330

Muscle gain target

How Many Calories Does a 23-Year-Old Woman Need?

Using the Mifflin-St Jeor equation with average US height and weight for a woman aged 23, the resting metabolic rate (BMR) is approximately 1476 kcal/day. With typical daily activity included, total calorie expenditure (TDEE) ranges from 1771 kcal (sedentary) to 2546 kcal (very active).

Age 23 note: Metabolism is at its peak in your late teens and early twenties. Prioritize protein and resistance training to build muscle that pays dividends for decades.

Calorie Targets by Goal

Goal	Daily Calories	Expected Result
🔵 Aggressive weight loss	1280 kcal	~0.75 kg/week
📉 Weight loss	1530 kcal	~0.5 kg/week
✅ Maintenance	2030 kcal	Weight stable
💪 Lean bulk	2330 kcal	~0.25 kg/week
🏋️ Aggressive bulk	2530 kcal	~0.5 kg/week

Calorie Needs by Activity Level

Activity Level	Description	Daily Calories
Sedentary	Desk job, minimal movement	1771 kcal
Lightly active	1–3 workouts/week	2030 kcal
Moderately active	3–5 workouts/week	2288 kcal
Very active	Hard training 6–7 days/week	2546 kcal

How Metabolism Changes Around Age 23

Metabolic rate declines approximately 1–2% per decade after age 30, driven primarily by muscle loss (sarcopenia) rather than any inherent slowdown. At age 23, your BMR of 1476 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 23
18	1501 kcal	+25 kcal
18	1501 kcal	+25 kcal
23	1476 kcal	—
28	1451 kcal	-25 kcal
33	1426 kcal	-50 kcal

Macronutrient Split at 2030 kcal

Macro	% of Calories	Grams/day	Calories
Protein	30%	152 g	608 kcal
Carbohydrates	40%	203 g	812 kcal
Fat	30%	68 g	612 kcal

At age 23, 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.

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

Calculate My TDEE →

Frequently Asked Questions

How many calories does a 23-year-old woman need per day?A lightly active 23-year-old woman of average size needs approximately 2030 kcal/day to maintain weight. This ranges from 1771 kcal (sedentary) to 2546 kcal (very active).

How many calories should a 23-year-old woman eat to lose weight?Aim for 1530 kcal/day — a 500 kcal deficit from the 2030 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 23 affect how many calories you burn?Yes. Every decade after 30, BMR drops ~1–2% mainly due to muscle loss. At age 23 the estimated BMR is 1476 kcal — compare to 1441 kcal at age 30. Resistance training largely offsets this decline.

Related Age Guides

Sources

WHO CDC Mifflin-St Jeor (PubMed)