1. What is BMI and Weight Loss Calculator?

Definition: This calculator estimates your Body Mass Index (BMI) and recommended daily calorie intake for weight loss based on your current weight, height, and desired calorie deficit.

Purpose: It helps individuals assess their weight status and plan for healthy weight loss through calorie management.

2. How Does the Calculator Work?

The calculator uses two main formulas:

And for calorie calculation:

Where:

• \( BMI \) — Body Mass Index (kg/m²)
• \( Weight \) — Your current weight in kilograms
• \( Height \) — Your height in meters
• \( BMR \) — Basal Metabolic Rate (calories your body needs at rest)
• \( Deficit \) — Your desired daily calorie deficit for weight loss

3. Importance of BMI and Calorie Calculation

Details: BMI helps classify weight status, while calorie calculation helps create an effective weight loss plan. A moderate calorie deficit leads to sustainable weight loss.

4. Using the Calculator

Tips: Enter your weight in kg, height in meters, and desired daily calorie deficit (default 500 kcal). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a healthy BMI range?
A: Normal BMI is 18.5-24.9. Below 18.5 is underweight, 25-29.9 is overweight, and 30+ is obese.

Q2: What calorie deficit should I choose?
A: 500 kcal/day deficit typically leads to about 0.5 kg (1 lb) of weight loss per week.

Q3: How accurate is the BMR calculation?
A: This uses the Mifflin-St Jeor equation with age 30 as default. For more accuracy, use a calculator that includes age and gender.

Q4: Can I use this if I want to gain weight?
A: Yes, simply enter a negative calorie deficit to calculate calorie surplus for weight gain.

Q5: Does BMI work for athletes?
A: BMI may overestimate body fat in muscular individuals as it doesn't distinguish between muscle and fat.