BMI & BMR Calculator

Calculate your Body Mass Index, BMR metabolic rate, and daily TDEE calorie targets with our free bmi bmr calculator. View ideal weights and macros.

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Quick Profiles:

Gender:

Age (years):

Height:

Current Weight:

Daily Physical Activity:

Your Primary Goal:

Body Mass Index (BMI):

24.7

Normal / Healthy Weight

Healthy weight range for your height: 59.9 - 80.7 kg

1418.5 (نحافة)25 (مثالي)30 (زيادة)40+ (سمنة)

Basal Metabolic Rate (BMR):1,780Calories burned at complete rest

Maintenance Energy (TDEE):2,759Total daily burn including activity

Target Daily Intake:2,759Maintenance baseline

Target Daily Macronutrient Split:

Protein 🥩207g828 kcal (30%)

Carbohydrates 🍚311g1242 kcal (45%)

Healthy Fats 🥑77g690 kcal (25%)

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Take control of your personal health, athletic conditioning, and nutritional planning with comprehensive biometric calculations. Understanding where your current physical metrics place you on the World Health Organization Body Mass Index scale provides valuable baseline health insight. Combined with the clinical Mifflin-St Jeor Basal Metabolic Rate formula and physical activity multipliers, this calculator determines your total daily energy expenditure and calculates precise caloric and macronutrient targets. Whether your objective is sustainable fat loss through a safe calorie deficit, weight maintenance, or lean muscle hypertrophy through a clean surplus, every target computes instantly inside your browser without sharing personal health details with external servers.

How to use BMI & BMR Calculator

Select your preferred measurement units: Metric (kilograms and centimeters) or Imperial (pounds and feet/inches).
Enter your gender, age, height, and current body weight into the biometric input card.
Select your typical weekly physical activity frequency and choose your primary goal: fat loss, maintenance, or muscle gain.
Inspect the interactive BMI meter, basal metabolic rate, and personalized daily protein, carbohydrate, and fat targets.

What you get

Accurate Body Mass Index score with color-coded World Health Organization classification categories.
Healthy ideal body weight range customized to your exact height in kilograms and pounds.
Basal Metabolic Rate (BMR) representing minimum resting caloric expenditure via Mifflin-St Jeor equations.
Total Daily Energy Expenditure (TDEE) and goal-specific macronutrient targets for protein, carbohydrates, and fats.

When to use BMI & BMR Calculator

Designing evidence-based nutrition and meal plans for steady fat loss or lean muscle mass building.
Tracking wellness milestones and shifts in BMI classification during structured fitness routines.
Estimating baseline energy expenditure for personal trainers, nutrition coaches, and athletic clients.
Converting and harmonizing body measurements between metric and imperial systems for international health forms.

Frequently asked questions about BMI & BMR Calculator

What is the difference between BMI and BMR?

Body Mass Index (BMI) evaluates whether your weight is proportional to your height according to population health categories. Basal Metabolic Rate (BMR) measures the exact number of calories your body burns at complete rest merely to maintain vital organs, respiration, and cellular homeostasis.

Why is the Mifflin-St Jeor formula preferred for BMR?

Extensive clinical reviews by the Academy of Nutrition and Dietetics established the Mifflin-St Jeor equation as the most reliable predictor of resting metabolic rate, outperforming older formulas like Harris-Benedict by accounting more accurately for modern body compositions.

How is the daily calorie deficit for weight loss calculated?

Sustainable fat loss targets subtract approximately 500 calories per day from your Total Daily Energy Expenditure (TDEE). Since one pound of adipose body fat equates to roughly 3,500 calories, a 500-calorie daily deficit results in approximately 0.5 kilograms (one pound) of fat loss per week.

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