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Use this simple BMI fitness calculator to calculate your Body Mass Index value online.

BMI is widely used in research, health care, and fitness settings to identify and track overweight and obesity, but it’s not appropriate for pregnant or very muscular individuals. BMI is an effective, non-invasive tool for tracking progress for extremely overweight or obese clients.

A healthy BMI =18 to 24.9; overweight =25 to 29.9; obese = 30+

Calculating BMI requires converting height and weight from standard to metric units of measure.