Lose Weight Calculator Women Over 40

Weight Loss Formula:

\[ \text{Daily Calories} = \text{TDEE} - \text{Deficit} \] \[ \text{TDEE} = \text{BMR} \times \text{Activity Factor} \] \[ \text{BMR (Women >40)} = 655 + (9.6 \times \text{weight in kg}) + (1.8 \times \text{height in cm}) - (4.7 \times \text{age}) \]

Weight:

Height:

Age:

years

Activity Level:

Desired Deficit:

kcal/day

BMR:

TDEE:

Daily Calories (for weight loss):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is the Weight Loss Calculation?

This calculator estimates the daily calorie intake needed for weight loss in women over 40 by calculating Total Daily Energy Expenditure (TDEE) and subtracting a calorie deficit. It uses the Mifflin-St Jeor equation specifically adjusted for women over 40.

2. How Does the Calculator Work?

The calculator uses these formulas:

\[ \text{Daily Calories} = \text{TDEE} - \text{Deficit} \] \[ \text{TDEE} = \text{BMR} \times \text{Activity Factor} \] \[ \text{BMR (Women >40)} = 655 + (9.6 \times \text{weight}) + (1.8 \times \text{height}) - (4.7 \times \text{age}) \]

Where:

\( \text{BMR} \) — Basal Metabolic Rate (calories burned at rest)
\( \text{TDEE} \) — Total Daily Energy Expenditure (calories burned including activity)
\( \text{Deficit} \) — Calorie reduction for weight loss (typically 500 kcal/day)
\( \text{Activity Factor} \) — Multiplier based on exercise level

Explanation: The equation accounts for age-related metabolic changes in women over 40, providing a more accurate estimate for weight loss planning.

3. Importance of Calorie Calculation

Details: Accurate calorie estimation is crucial for healthy, sustainable weight loss, especially for women over 40 who experience metabolic changes.

4. Using the Calculator

Tips: Enter weight in kg, height in cm, age (must be 40+), select activity level, and desired deficit. A 500 kcal/day deficit typically leads to ~0.5 kg weight loss per week.

5. Frequently Asked Questions (FAQ)

Q1: Why a special calculator for women over 40?
A: Metabolism slows with age, especially after 40, and women experience hormonal changes that affect weight loss.

Q2: What's a safe calorie deficit?
A: 300-500 kcal/day is generally safe; extreme deficits can be counterproductive and unhealthy.

Q3: How accurate is the BMR calculation?
A: Mifflin-St Jeor is about 70% accurate for individuals; actual needs may vary by ±15%.

Q4: Should I adjust my calories as I lose weight?
A: Yes, recalculate every 5-10 kg lost, as your BMR decreases with weight loss.

Q5: What if I'm not losing weight at these calories?
A: You may need to adjust your deficit slightly or reevaluate your activity level and food tracking accuracy.