BMI & Calorie Calculator
Calculate your Body Mass Index (BMI) and daily calorie needs for maintenance, weight loss, or bulking. Get a personalized macro breakdown instantly.
Health Calculator
Get your personalized body metrics and daily calories
🏋️ Why Use Our BMI & Calorie Calculator?
Get your BMI classification, daily calorie needs (TDEE), and macronutrient breakdown all in one calculation. No need to visit separate sites for BMI, calories, and macros — everything is calculated together from a single set of inputs.
Your height, weight, and personal measurements are processed entirely in your browser. No data is stored or transmitted to any server — complete privacy for your health information.
Uses the Mifflin-St Jeor equation for BMR and industry-standard activity multipliers for TDEE — the same formulas used by nutritionists and fitness professionals for evidence-based calorie recommendations.
⚙️ How to Calculate BMI & Calories
Input your age, gender, height, weight, and activity level. Supports both metric and imperial units for global accessibility.
Instantly see your BMI with a color-coded classification gauge, plus your daily calorie needs for maintenance, weight loss, and muscle gain scenarios.
Use the detailed macronutrient breakdown (protein, carbs, fat) with specific gram targets to plan meals that align with your fitness goals.
Understand Your BMI Category
BMI is a widely used screening tool that categorizes your weight relative to height into underweight, normal, overweight, and obese ranges. While not a definitive health diagnostic, it provides a useful starting point for understanding whether your weight falls within a medically recommended range for your height.
Personalized Calorie Targets
Your Total Daily Energy Expenditure (TDEE) varies based on age, gender, weight, and how active you are. Our calculator provides specific calorie targets for maintenance (staying the same weight), deficit (losing fat), and surplus (building muscle) — giving you actionable numbers to guide your daily eating habits.
Macro Breakdown for Meal Planning
Knowing total calories is only half the picture. Our calculator breaks down your daily intake into grams of protein, carbohydrates, and fat for each calorie target scenario. This macronutrient detail lets you plan balanced meals that support your specific goals — whether that is preserving muscle during a cut or maximizing recovery during a bulk.