Nutrya tracks your calories, macros and weight progress toward your ideal BMI — for free.

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BMI Calculator (Body Mass Index)

Calculate your BMI in seconds. Get a personalized interpretation based on your age and sex, along with tailored recommendations.

BMICategoryHealth Risk
< 16.5Severe undernutritionVery high
16.5 – 18.4UnderweightHigh
18.5 – 24.9Normal weight ✓Low
25 – 29.9OverweightModerate
30 – 34.9Moderate obesityHigh
35 – 39.9Severe obesityVery high
≥ 40Morbid obesityExtremely high

What to do with your result?

Your BMI is in the normal range. The goal is to maintain it through a balanced diet and regular physical activity. Nutrya helps you track your daily caloric intake to stay in this zone.

An overweight BMI indicates a potential excess of body fat. A moderate caloric deficit of 300-500 kcal/day allows a loss of 0.3-0.5 kg/week without frustration. Nutrya automatically calculates your calorie goal.

A BMI below normal may indicate underweight. Gradually increasing caloric intake with nutritious foods is the priority. Nutrya helps you reach your calorie and protein targets.

A BMI in the obesity range requires appropriate medical follow-up. Nutritionally, the most effective approach is a gradual and sustainable reduction — not a severe diet. Nutrya supports you with realistic goals.

BMI Limitations

BMI is a screening indicator, not a diagnosis. It does not distinguish between muscle mass and fat mass: a very muscular athlete may have a high BMI without excess fat. Similarly, an older person may have a normal BMI but excess abdominal fat. Use it as a starting point, not as an absolute truth.

Frequently Asked Questions

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Ready to transform your nutrition?

Download Nutrya and track your meals by photo, barcode or manual entry — for free.