Calorie Calculator

How to Use This Calculator

1. Enter your personal details:

   • Select your gender (male/female)

   • Input your age in years (15-100)

   • Enter your height in centimeters (100-250cm)

   • Enter your weight in kilograms (30-200kg)

2. Select your activity level:

   • Choose from sedentary to extra active based on your exercise habits

3. Set your goal:

   • Maintain current weight

   • Lose weight (reduces calories by 500/day)

   • Gain weight (increases calories by 500/day)

4. Calculate:

   • Click the “Calculate Calories” button

   • View your personalized results including maintenance calories, recommended intake, and BMI

Key Features

• Accurate calorie estimation: Uses the Mifflin-St Jeor equation (most accurate BMR formula)

• BMI calculation: Automatically calculates and categorizes your Body Mass Index

• Goal-oriented recommendations: Adjusts calories based on weight goals

• Mobile-responsive design: Works perfectly on all devices

• No external dependencies: Runs completely in your browser

• Educational BMI information: Includes standard BMI categories for reference

Technical Details

Algorithm Used

• BMR Calculation:

  • Men: BMR = 88.362 + (13.397 × weight) + (4.799 × height) - (5.677 × age)

  • Women: BMR = 447.593 + (9.247 × weight) + (3.098 × height) - (4.330 × age)

• Activity Multipliers:

  • Sedentary: ×1.2

  • Lightly active: ×1.375

  • Moderately active: ×1.55

  • Very active: ×1.725

  • Extra active: ×1.9

• BMI Calculation: weight (kg) / (height (m))²