Body Composition

BMI Calculator

Use height and weight to estimate body mass index and get a simple screening view of your current range.

Calculate your BMI

Enter height and weight to get a quick body mass index estimate and a basic category range.

BMI categories

Underweight: below 18.5
Normal: 18.5 to 24.9
Overweight: 25 to 29.9
Obesity: 30 and above

Result

Healthy weight range for your height

BMI works best as a screening tool. If you have above-average muscle mass or a very different body composition, use waist measurements, photos, and performance markers alongside it.

Why this tool helps

BMI is a quick reference metric for body weight relative to height. It is useful for general screening, but it does not directly measure body fat or athletic body composition.

Best use cases

Quick body-weight screening

General fitness check-ins

Starting a fat-loss or maintenance plan

How to use it

Step 1

Enter your height in centimeters.

Step 2

Add your body weight in kilograms.

Step 3

Review the BMI score, category, and healthy weight range.

Planning note

Use the result as a starting number, not a final prescription. Real-world adjustments still depend on performance, recovery, appetite, schedule, and consistency over time.

These tools are designed for fitness planning and general education. They are not a substitute for medical diagnosis or individualized clinical advice.