BMI & Ideal Weight Calculator
Enter your height and weight to calculate your BMI (Body Mass Index), its category, and the difference from the reference weight. Everything runs in your browser; nothing is sent anywhere.
Enter your height and weight to get started.
Results
This follows the Japan Society for the Study of Obesity's thresholds (under 18.5 = underweight, 18.5–25 = normal, 25 and above = obese), close to WHO guidance. It is a general estimate, not a medical diagnosis — consult a doctor if you have concerns.
When this comes in handy
Useful when you want to check whether your weight falls in a typical range after a health checkup, or when setting a target weight for a diet. Enter your height and weight to instantly see your BMI, its category, and how far you are from the reference weight at BMI 22.