About the BMI Calculator
Compute your Body Mass Index from height and weight in metric or imperial units. Results show your BMI value, WHO category, healthy weight range for your height, and a visual gauge.
BMI is a quick screening tool used worldwide — this calculator adds context so the number is actually meaningful.
How to use the BMI Calculator
- Choose metric (kg/cm) or imperial (lb/ft-in) units.
- Enter your height and weight.
- Read your BMI, category and healthy weight range.
Common uses
Quick health screening
Tracking fitness progress over time
Understanding healthy weight ranges
Frequently asked questions
What is a healthy BMI?
The WHO defines 18.5–24.9 as the healthy range for most adults.
Is BMI accurate for athletes?
BMI does not distinguish muscle from fat, so very muscular people may read "overweight" despite low body fat. Treat it as a screening tool, not a diagnosis.
How is BMI calculated?
Weight in kilograms divided by height in meters squared (kg/m²). Imperial inputs are converted automatically.
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