⚖️ BMI Calculator
Check your Body Mass Index and visual health spectrum instantly.
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📖 How to Use
- Select your preferred measurement unit tab: 'Metric' (cm, kg) or 'US Units' (ft, in, lbs).
- Enter your exact height and weight into the designated input fields.
- Click the 'Calculate BMI' button to analyze your Body Mass Index.
- Observe the smooth needle animation on the dynamic color gauge to identify your weight status category.
✨ Key Features
Dual Unit System Support
Seamlessly switch between Metric (cm/kg) and US Imperial (feet/inches/pounds) measurement systems.
Visual Dynamic BMI Gauge
Features an animated color-coded spectrum bar (Underweight, Normal, Overweight, Obese) with real-time needle positioning.
WHO Standard Categorization
Utilizes World Health Organization (WHO) BMI ranges to deliver accurate health status evaluations.
Instant Client-Side Computation
All health metrics are processed instantly in your browser with complete privacy and zero server storage.
❓ Frequently Asked Questions
What is Body Mass Index (BMI)?
Body Mass Index (BMI) is a standardized numerical value derived from an individual's height and weight, used globally as a screening tool to classify weight categories.
How are the BMI categories defined?
According to standard WHO classifications: Underweight is below 18.5 (Blue), Normal weight is 18.5–24.9 (Green), Overweight is 25.0–29.9 (Yellow/Orange), and Obese is 30.0 or higher (Red).
How does the US Units tab calculate BMI?
The US Units system converts height into total inches and uses the official imperial formula: BMI = [Weight (lbs) / Height (in)²] × 703.
Is BMI an accurate measure for athletes or bodybuilders?
BMI does not differentiate between muscle mass and body fat. Athletes with high muscle mass may be classified as overweight or obese despite having low body fat.