Calculator
BMI Calculator
Switch units, enter weight/height, and see your BMI category.
Units
Choose measurement system.
Enter your details
Weight and height in selected units.
Frequently Asked Questions
Is this BMI calculator free to use?
Yes! This BMI (Body Mass Index) calculator is 100% free with no sign-up required. Calculate your BMI unlimited times using either metric (kg/cm) or imperial (lbs/inches) units.
How do I calculate my BMI?
Select your preferred unit system (metric or imperial), enter your weight and height, then click "Calculate BMI". The tool will instantly show your BMI score and health category (underweight, normal, overweight, or obese).
What do the BMI ranges mean?
BMI categories are: Underweight (below 18.5), Normal weight (18.5-24.9), Overweight (25-29.9), and Obese (30 and above). These ranges help assess health risks associated with body weight relative to height.
Can I switch between metric and imperial units?
Absolutely! Use the toggle buttons to switch between metric (kilograms and centimeters) and imperial (pounds and inches) units. The calculator handles both measurement systems accurately.
How accurate is BMI as a health indicator?
BMI is a useful screening tool for general population health assessment. However, it doesn't account for muscle mass, bone density, or body composition. Consult healthcare professionals for personalized health evaluation.