Losing Weight Calculator By Date Of Birth

Weight Loss Equation:

\[ Calories = BMR \times activity\_factor - deficit \]

Date of Birth:

Gender:

Weight:

Height:

Activity Level:

Daily Calorie Deficit:

kcal/day

Basal Metabolic Rate (BMR):

Daily Calories for Weight Loss:

Estimated Weekly Weight Loss:

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is the Weight Loss Calculator?

The Losing Weight Calculator estimates your daily calorie needs for weight loss based on your Basal Metabolic Rate (BMR), activity level, and desired calorie deficit. It uses your date of birth to calculate your exact age for more accurate results.

2. How Does the Calculator Work?

The calculator uses the following equations:

\[ BMR (Men) = (10 \times weight) + (6.25 \times height) - (5 \times age) + 5 \] \[ BMR (Women) = (10 \times weight) + (6.25 \times height) - (5 \times age) - 161 \] \[ Calories = BMR \times activity\_factor - deficit \]

Where:

\( weight \) — Body weight in kilograms
\( height \) — Height in centimeters
\( age \) — Age in years (calculated from date of birth)
\( activity\_factor \) — Multiplier based on activity level
\( deficit \) — Desired daily calorie deficit for weight loss

3. Importance of Calorie Calculation

Details: Accurate calorie calculation is crucial for effective weight management. Understanding your BMR helps create personalized weight loss plans that are sustainable and healthy.

4. Using the Calculator

Tips: Enter your accurate date of birth, current weight and height, select your activity level, and choose a reasonable calorie deficit (typically 500 kcal/day for safe weight loss).

5. Frequently Asked Questions (FAQ)

Q1: What is a safe calorie deficit?
A: A deficit of 500-1000 kcal/day is generally safe, leading to 0.5-1 kg weight loss per week.

Q2: Why use date of birth instead of just age?
A: Calculating exact age from date of birth provides more precise results, especially near birthdays.

Q3: How accurate is the BMR calculation?
A: The Mifflin-St Jeor equation used here is about 90% accurate for most people, but individual variations exist.

Q4: Should I eat below my BMR?
A: Generally no - your BMR represents the calories needed for basic bodily functions. Eating below BMR should only be done under medical supervision.

Q5: How often should I recalculate my needs?
A: Recalculate every 5-10 kg of weight loss or if your activity level changes significantly.