Calibrated for women

TDEE Calculator for Women

Q: Why is my TDEE lower than a man's at the same weight?

Women typically have a higher body fat percentage and less lean muscle mass than men at the same weight. Since muscle tissue burns more calories at rest, this results in a lower BMR and TDEE. The Mifflin-St Jeor formula accounts for this with a female-specific constant (−161 vs +5 for men).

Q: Does the menstrual cycle affect TDEE?

Yes. During the luteal phase (roughly the two weeks after ovulation), basal metabolic rate can increase by 5–10%, potentially burning an extra 100–300 calories per day. This is why many women experience increased hunger before their period.

Q: How many calories should a woman eat to lose weight?

Most women will lose weight at a moderate pace by eating 500 calories below their TDEE. For most moderately active women, this falls between 1,400–1,800 calories per day. Never go below 1,200 calories per day without medical supervision.

Q: Does menopause change my TDEE?

Yes. The decline in estrogen during menopause leads to decreased muscle mass and increased fat storage, which lowers BMR. Post-menopausal women may see their TDEE drop by 200–300 calories per day compared to pre-menopausal levels at the same weight and activity level.

Q: Should women eat differently during their menstrual cycle?

Some women benefit from a flexible approach — eating slightly more (100–200 extra calories) during the luteal phase when metabolism is naturally higher and hunger increases, and eating at their standard target during the follicular phase. This can improve adherence without affecting overall results.

Women's metabolism works differently — the Mifflin-St Jeor equation uses a female-specific constant (−161) that accounts for hormonal differences and body composition. Enter your details for results that update instantly.

Female-specific Mifflin-St Jeor equation · Maintenance, fat loss & muscle gain

Your gender

Male Female

Your age

Your height

Your weight

How active are you?

Your calorie targets

Maintenance

—

kcal / day

Keep your weight stable at this level

Fat Loss

—

kcal / day

−500 kcal deficit · ~0.45 kg/week

Muscle Gain

—

kcal / day

+300 kcal surplus · lean bulk

Your BMR — Calories burned at complete rest

Aggressive deficit (−750 kcal) — ~0.68 kg/week · use with caution

Calculated using the Mifflin-St Jeor equation (female constant −161)

These estimates are for informational purposes only and are not medical advice. Consult a registered dietitian or healthcare professional for personalized guidance.

How Hormones Affect Women's TDEE

Women's calorie needs are not static — they shift across the menstrual cycle, change with age, and respond to hormonal transitions like pregnancy and menopause. Understanding these patterns helps you set more accurate targets and avoid frustration when the scale doesn't move as expected.

The Female-Specific Formula Constant

The Mifflin-St Jeor equation applies a constant of −161 for women (compared to +5 for men). This reflects the average difference in lean body mass and fat-free mass between sexes at a given height, weight, and age. It is not a judgment — it is a calibration for physiology.

The Menstrual Cycle and Metabolism

Your BMR naturally fluctuates throughout the month. During the follicular phase (days 1–14, from period onset to ovulation), metabolic rate tends to be at baseline. In the luteal phase (days 15–28, after ovulation), progesterone rises and raises core body temperature slightly, increasing BMR by approximately 5–10% — equivalent to 100–300 extra calories per day for most women.

This is why hunger is higher in the week before a period. It is a real, measurable physiological effect, not a lack of willpower.

Perimenopause and Menopause

As estrogen levels decline during perimenopause and menopause, the body tends to lose lean muscle mass and redistribute fat to the abdominal area. This lowers BMR and therefore TDEE — typically by 200–300 kcal/day compared to pre-menopausal baselines at the same weight. Strength training and adequate protein intake (1.6–2.0 g/kg) are the most effective countermeasures.

Practical Implications

Rather than fighting the cycle, work with it. Consider eating slightly more (100–200 extra calories) during the luteal phase when hunger is higher, and sticking closer to your calculated target during the follicular phase. Over a full month, the difference averages out — and you will have an easier time staying consistent.

Example:

A 32-year-old woman, 165 cm, 65 kg, moderately active:

BMR = (10 × 65) + (6.25 × 165) − (5 × 32) − 161 = 1,420 kcal/day

TDEE = 1,420 × 1.55 = 2,201 kcal/day

Fat loss target = 2,201 − 500 = 1,701 kcal/day

Related Calculators

TDEE Calculator

The main TDEE calculator — works for all genders with the full Mifflin-St Jeor formula.

TDEE Calculator for Men

The male-specific version using the +5 constant — share it with a partner or training buddy.

TDEE for Weight Loss

Get your maintenance calories plus a ready-made fat loss deficit target in one step.

Calorie Deficit Calculator

Enter your TDEE and a weight loss goal to get a daily calorie target and projected timeline.

Macro Calculator

Split your TDEE into daily protein, carbohydrate, and fat targets for your specific goal.

BMR Calculator

Find your Basal Metabolic Rate — the calorie floor below which you should not eat long-term.

Learn More About TDEE

What Is TDEE?

A complete guide to Total Daily Energy Expenditure — what it is, how it's calculated, and how to use it.

TDEE vs BMR — What's the Difference?

BMR is what you burn at rest. TDEE is what you actually burn. Learn why the difference matters.

How Many Calories to Lose Weight?

The calorie math behind fat loss — safe deficit ranges, weekly projections, and worked examples.

Our Methodology

See the Mifflin-St Jeor equation and data sources used in every calculator on this site.

Frequently Asked Questions

Why is my TDEE lower than a man's at the same weight? +

Women typically have higher body fat percentage and less lean muscle mass than men at the same weight. The Mifflin-St Jeor formula accounts for this with a female-specific constant (−161 vs +5 for men). Since muscle burns more calories at rest than fat tissue, a lower proportion of lean mass means a lower BMR and TDEE.

Does the menstrual cycle affect TDEE? +

Yes. During the luteal phase, BMR can increase by 5–10%, burning an extra 100–300 calories per day. This is a real physiological effect driven by rising progesterone and a slight increase in core body temperature. It explains why hunger is higher before a period — your body genuinely needs more fuel.

How many calories should a woman eat to lose weight? +

Most women will lose weight eating 500 calories below their TDEE, typically 1,400–1,800 cal/day depending on size and activity. This creates roughly 0.45 kg of fat loss per week. Never go below 1,200 cal/day without medical supervision, as very low intakes risk nutrient deficiencies, hormonal disruption, and muscle loss.

Does menopause change my TDEE? +

Yes. Declining estrogen leads to decreased muscle mass and increased fat storage, lowering BMR by 200–300 cal/day. Post-menopausal women often notice their previous calorie intake now leads to slow weight gain. Strength training and protein-rich eating are the most effective ways to preserve metabolic rate during this transition.

Should women eat differently during their menstrual cycle? +

Some women benefit from eating 100–200 extra calories during the luteal phase when metabolism is naturally higher. This flexible approach can improve adherence to a diet without affecting monthly averages. It is not obligatory, but for women who struggle with hunger in the pre-period week, it can make a meaningful difference to consistency.