What is a BMI Calculator?
A BMI (Body Mass Index) calculator computes a value from your height and weight to indicate weight category: underweight, normal, overweight, or obese. Supports both metric and imperial units. BMI is a screening tool, not a diagnostic measure.
Frequently Asked Questions
What is a healthy BMI?
18.5–24.9 is normal. Below 18.5 is underweight, 25–29.9 is overweight, 30+ is obese.
Is BMI accurate for athletes?
BMI may overestimate fat for muscular individuals since it doesn't distinguish muscle from fat.
How is BMI calculated?
Weight (kg) ÷ height (m)². Imperial: (weight in lbs × 703) ÷ (height in inches)².