BMI Calculator

Enter your height and body weight.

Height

Weight

Your BMI result

Body Mass Index

—

Healthy weight from

—

BMI 18.5

Healthy weight to

—

BMI 24.9

Standard adult BMI categories

<18.5 18.5 24.9 29.9 40+

BMI interpretation

Your BMI category will appear here.

How it works

Choose your units

Use Metric for centimetres and kilograms, or Imperial for feet, inches and pounds.

Enter your height

Enter your current height using the selected measurement system.

Enter your weight

Enter your current body weight and calculate your BMI instantly.

Understand your result

See your BMI, standard adult category and estimated healthy-weight range.

Underweight Below 18.5

Healthy range 18.5 – 24.9

Overweight 25.0 – 29.9

Obesity 30.0 or higher

Core Formula

BMI = Weight (kg) ÷ Height² (m²)

Important performance note

BMI is a screening measure and does not directly measure body fat or body composition. It can be less informative for highly muscular athletes and may not be appropriate for children, pregnancy or certain medical conditions. Use the result as one general indicator rather than a complete assessment of health or athletic performance.

Know your BMI.

BMI Calculator

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