BMI Calculator
Calculate your Body Mass Index and get personalized health insights and recommendations for achieving your fitness goals.
Enter your height and weight to calculate your Body Mass Index
Body Mass Index (BMI) is a measure that uses height and weight to determine if you're in a healthy weight range.
While BMI is a useful screening tool, it has limitations:
- Doesn't distinguish between muscle and fat
- May not be accurate for athletes or elderly
- Different considerations for children
- Ethnicity can affect health risks at different BMI levels
BMI Categories and Ranges
The standard World Health Organization BMI classification used throughout this calculator
| Category | BMI Range |
|---|---|
| Underweight | Below 18.5 |
| Normal weight | 18.5 – 24.9 |
| Overweight | 25 – 29.9 |
| Obese | 30 and above |
BMI for athletes
BMI doesn't distinguish between muscle and fat, so athletes and clients carrying significant muscle mass often land in the "overweight" or "obese" categories above despite having low body fat. For these clients, treat BMI as a starting point rather than a verdict — pairing it with body-fat percentage and waist circumference gives a far more accurate read on health risk. FitFloww tracks weight, body-fat percentage, and waist circumference per client, so coaches can see the full picture — and derive BMI from tracked height and weight — instead of relying on a single number.
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Track BMI for all your clients automatically
FitFloww logs body composition, BMI trends, and progress photos in one place — no manual calculations needed.
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