BMI Calculator
Calculate your Body Mass Index free.
Why use our BMI Calculator?
Built on the standard formula. Private, fast, free.
Trusted Formula
Uses the widely accepted BMI formula recognized by health organizations worldwide.
Instant Result
See your BMI and healthy weight category in seconds — no signup required.
Private
All calculations run in your browser. Your measurements never leave your device.
The BMI Formula
Metric
BMI = weight(kg) / height(m)²Imperial
BMI = 703 × weight(lb) / height(in)²BMI is a screening tool and does not diagnose body fatness or health. Consult a healthcare provider for a full assessment.