How many calories should a 45-year-old 160 lb woman eat to lose weight?

A 45-year-old 160 lb woman should eat approximately 1364 kcal/day to lose about 1 lb per week — a 500 kcal deficit from the maintenance estimate of 1864 kcal.

What is the BMI for a 160 lb woman?

At 160 lbs (72.6 kg) and average height (162.6 cm), the BMI is 27.5 — Overweight ⚠️.

Calorie Guide · Age 45 · 160 lbs

Calories for a 45-Year-Old 160 lb Woman

Q: How many calories does a 45-year-old 160 lb woman need?

A lightly active 45-year-old 160 lb woman of average height needs approximately 1864 kcal/day to maintain weight. This ranges from 1627 kcal (sedentary) to 2339 kcal (very active).

Exact BMR, TDEE and calorie targets for a 45-year-old woman weighing 160 lbs (72.6 kg).

Calorie Needs: 45 years old · 160 lbs · Woman

1356

BMR (at rest)

1627

Sedentary TDEE

1864
Lightly active TDEE

2102

Moderately active

1364

Weight loss target

1864

Maintenance

2164

Muscle gain target

How Many Calories Does a 45-Year-Old 160 lb Woman Need?

Using the Mifflin-St Jeor equation with your exact inputs — age 45, weight 160 lbs (72.6 kg), average woman's height (162.6 cm) — the resting metabolic rate is 1356 kcal/day. With typical daily activity, total calorie expenditure (TDEE) ranges from 1627 kcal (sedentary) to 2339 kcal (very active).

Age 45 note: After 40, hormonal changes further reduce metabolic rate. Sleep, stress management and strength training become increasingly important for body composition.

Calorie Targets by Goal

Goal	Daily Calories	Expected Result
🔵 Aggressive weight loss	1114 kcal	~1.5 lbs/week
📉 Weight loss	1364 kcal	~1 lb/week
✅ Maintenance	1864 kcal	Weight stable
💪 Lean bulk	2164 kcal	~0.5 lbs/week
🏋️ Aggressive bulk	2364 kcal	~1 lb/week

Calorie Needs by Activity Level

Activity Level	Description	Daily Calories
Sedentary	Desk job, minimal movement	1627 kcal
Lightly active	1–3 workouts/week	1864 kcal
Moderately active	3–5 workouts/week	2102 kcal
Very active	Hard training 6–7 days/week	2339 kcal

BMI at 160 lbs

At 160 lbs (72.6 kg) and average height for a woman (162.6 cm), your BMI is 27.5 — Overweight ⚠️. BMI is a useful screening tool but doesn't measure body composition. Waist circumference and muscle mass provide additional context.

Macronutrient Split at 1864 kcal

Macro	% of Calories	Grams/day	Calories
Protein	30%	140 g	560 kcal
Carbohydrates	40%	186 g	744 kcal
Fat	30%	62 g	558 kcal

For weight loss at 1364 kcal/day, increase protein to 35% (119 g/day) to preserve muscle during the deficit. At age 45, protein becomes increasingly important for maintaining metabolic rate.

Get a fully personalized TDEE based on your exact height and activity level.

Calculate My TDEE →

Frequently Asked Questions

How many calories should a 45-year-old 160 lb woman eat per day?A lightly active 45-year-old 160 lb woman needs approximately 1864 kcal/day to maintain weight. This ranges from 1627 kcal (sedentary) to 2339 kcal (very active).

How many calories to lose weight at 160 lbs, age 45?Eat 1364 kcal/day for a 500 kcal deficit — approximately 1 lb of fat loss per week. Recalculate your targets every 4–6 weeks as your weight changes.

Does age 45 significantly affect calorie needs vs age 40?At age 45, BMR is approximately 1356 kcal vs 1381 kcal at age 40 — a difference of 25 kcal/day. This is mainly driven by gradual muscle loss over time, which is largely preventable with resistance training.

Related Calorie Guides

Sources

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