BMI Calculator
Calculate your Body Mass Index and get personalized health insights
Enter your details
Your BMI results will appear here
How to Use Our Free BMI Calculator
- Enter your weight and height.
- Select metric or imperial units.
- Optionally enter age and gender for body fat and BMR estimates.
- Click Calculate to see your results.
Key Features
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BMI Classification
Visual gauge showing where your BMI falls across all categories.
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Body Fat Estimate
Estimated body fat percentage based on age and gender.
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BMR Calculation
Basal Metabolic Rate — daily calories needed at rest.
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Ideal Weight Range
Healthy weight range for your height.
Understanding BMI
Body Mass Index (BMI) is a simple calculation using height and weight to estimate body fat. While not perfect, it's widely used by healthcare professionals as an initial screening tool. Our advanced calculator goes beyond basic BMI to provide body fat estimates, metabolic rate, and personalized health advice.
Frequently Asked Questions
How is BMI calculated?▼
BMI is calculated by dividing your weight in kilograms by the square of your height in meters: BMI = weight(kg) / height(m)². Our calculator handles all conversions automatically.
Is BMI an accurate measure of health?▼
BMI is a useful screening tool but doesn't account for muscle mass, bone density, or body composition. Athletes may have a high BMI due to muscle. Use it as one of several health indicators.
What is a healthy BMI range?▼
A BMI between 18.5 and 24.9 is considered normal/healthy. Below 18.5 is underweight, 25-29.9 is overweight, and 30+ is obese.
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