What is the BMR for a 19-year-old woman?

The estimated BMR (basal metabolic rate) for a 19-year-old woman of average height and weight is 1496 kcal/day, calculated using the Mifflin-St Jeor equation.

Calorie Guide · Age 19

Calories for a 19-Year-Old Woman

Q: How many calories does a 19-year-old woman need?

A lightly active 19-year-old woman of average weight and height needs approximately 2057 kcal/day to maintain weight. Sedentary needs are around 1795 kcal, and very active around 2581 kcal.

Q: How many calories should a 19-year-old woman eat to lose weight?

A 19-year-old woman should eat approximately 1557 kcal/day to lose about 0.5 kg (1 lb) per week. This is a 500 kcal deficit from the estimated maintenance of 2057 kcal.

BMR, TDEE and exact calorie targets for weight loss, maintenance and muscle gain at age 19.

Calorie Needs at Age 19 — Average Woman

1496

BMR (at rest)

1795

Sedentary TDEE

2057
Lightly active TDEE

2319

Moderately active

1557

Weight loss target

2057

Maintenance

2357

Muscle gain target

How Many Calories Does a 19-Year-Old Woman Need?

Using the Mifflin-St Jeor equation with average US height and weight for a woman aged 19, the resting metabolic rate (BMR) is approximately 1496 kcal/day. With typical daily activity included, total calorie expenditure (TDEE) ranges from 1795 kcal (sedentary) to 2581 kcal (very active).

Age 19 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	1307 kcal	~0.75 kg/week
📉 Weight loss	1557 kcal	~0.5 kg/week
✅ Maintenance	2057 kcal	Weight stable
💪 Lean bulk	2357 kcal	~0.25 kg/week
🏋️ Aggressive bulk	2557 kcal	~0.5 kg/week

Calorie Needs by Activity Level

Activity Level	Description	Daily Calories
Sedentary	Desk job, minimal movement	1795 kcal
Lightly active	1–3 workouts/week	2057 kcal
Moderately active	3–5 workouts/week	2319 kcal
Very active	Hard training 6–7 days/week	2581 kcal

How Metabolism Changes Around Age 19

Metabolic rate declines approximately 1–2% per decade after age 30, driven primarily by muscle loss (sarcopenia) rather than any inherent slowdown. At age 19, your BMR of 1496 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 19
18	1501 kcal	+5 kcal
18	1501 kcal	+5 kcal
19	1496 kcal	—
24	1471 kcal	-25 kcal
29	1446 kcal	-50 kcal

Macronutrient Split at 2057 kcal

Macro	% of Calories	Grams/day	Calories
Protein	30%	154 g	616 kcal
Carbohydrates	40%	206 g	824 kcal
Fat	30%	69 g	621 kcal

At age 19, 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.

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Frequently Asked Questions

How many calories does a 19-year-old woman need per day?A lightly active 19-year-old woman of average size needs approximately 2057 kcal/day to maintain weight. This ranges from 1795 kcal (sedentary) to 2581 kcal (very active).

How many calories should a 19-year-old woman eat to lose weight?Aim for 1557 kcal/day — a 500 kcal deficit from the 2057 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 19 affect how many calories you burn?Yes. Every decade after 30, BMR drops ~1–2% mainly due to muscle loss. At age 19 the estimated BMR is 1496 kcal — compare to 1441 kcal at age 30. Resistance training largely offsets this decline.

Related Age Guides

Sources

WHO CDC Mifflin-St Jeor (PubMed)