BMI Calculator
Calculate Body Mass Index (BMI) and evaluate health weight categories.
bmi calculator Inputs
About BMI Calculator
The Body Mass Index (BMI) Calculator computes adult and child BMI percentiles, healthy weight ranges, and WHO weight classifications (Underweight, Normal, Overweight, Obese) using Metric (kg/cm) and Imperial (lbs/ft/in) units.
How to Use BMI Calculator
Step 1
Choose Metric (kg/cm) or Imperial (lbs/ft/in) units.
Step 2
Enter your height and weight.
Step 3
Inspect your calculated BMI score and weight category color gauge.
Step 4
Review your recommended ideal body weight range.
Practical Use Cases for BMI Calculator
Fitness Tracking & Weight Management
Assess healthy body weight baselines and calculate target weight ranges for diet, athletic conditioning, and fitness goals.
Clinical & Health Screening Reference
Screen for potential weight-related cardiovascular and metabolic health risks using standard World Health Organization criteria.
Input & Output Examples
Calculating BMI for 70 kg at 175 cm
Weight: 70 kg, Height: 175 cm
BMI: 22.86 kg/m² | Category: NORMAL WEIGHT (18.5 - 24.9) | Healthy Weight Range: 56.7 kg - 76.3 kg
Key Features & Performance
- ✓Supports Metric (Kilograms, Centimeters) and Imperial (Pounds, Feet, Inches) unit systems.
- ✓World Health Organization (WHO) BMI classification scale visual gauge.
- ✓Calculates ideal healthy weight range for your specific height.
- ✓Prime BMI ratio indicator.
- ✓100% Client-Side calculation ensures complete personal health data privacy.
- ✓1-Click Copy health metrics.
Key Terminology & Definitions
Body Mass Index (BMI)
A value derived from the mass (weight) and height of a person, defined as body mass divided by the square of body height: kg/m².
WHO BMI Categories
Underweight (< 18.5), Normal weight (18.5–24.9), Overweight (25–29.9), and Obese (≥ 30).