BMI Calculator Online – Free Body Mass Index Checker
BMI Calculator helps you calculate Body Mass Index from height and weight, and shows your category instantly. All calculations run locally for privacy.
INPUT
RESULT
BMI is for adults only. Not a medical diagnosis.
What Is BMI Calculator?
BMI Calculator is a free online tool that calculates your Body Mass Index based on your height and weight. It helps you check if you are underweight, normal, overweight, or obese according to international health standards.
How It Works
- Select unit system: Metric (cm/kg) or Imperial (in/lbs).
- Enter your height and weight.
- Click Calculate to get your BMI value and health category.
- Copy your result with one click.
Key Features
- Support Metric (cm/kg) and Imperial (in/lbs) units
- Instant BMI calculation and health status evaluation
- Clear health category labels: Underweight, Normal, Overweight, Obese
- Simple and user-friendly interface
- One-click copy result
- Clear and reset buttons
- Load example function
- 100% free, no login required
- Mobile-friendly and fully responsive
- Local calculation, no data uploaded
Common Use Cases
- Personal health and fitness monitoring
- Weight management and diet planning
- Fitness and workout progress tracking
- School and sports health checks
- Family and personal wellness evaluation
How to Use
- Open the BMI Calculator tool.
- Choose Metric or Imperial unit.
- Enter your height and weight.
- Click Calculate, view result, and copy.
Note
BMI is a general reference for adult health. It is not a diagnostic tool. Consult a doctor for professional medical advice.
Want to Learn More?
Learn what BMI Calculator is, how it works, key features, and who it helps. Fast BMI checks—private, no login.
📖 Learn More About BMI Calculator