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Free BMI Calculator

100% Client-Side: Your data never leaves your browser. Zero server processing or data storage.

BMI Calculator (Body Mass Index)

Calculate your Body Mass Index (BMI) instantly using Metric (cm/kg) or Imperial (feet/inches/lbs) units. View your healthy weight range and health insights.

Your Body Mass Index
22.9
Normal Weight
15 (Under) 18.5 25.0 30.0 40+ (Obese)
Healthy Weight Range: For your height, a normal weight range is 56.7 kg – 76.6 kg.

Understanding Your BMI Result

Body Mass Index (BMI) is a universal screening measurement used by health professionals to classify body weight relative to height. It provides a quick evaluation of body composition categories:

  • Underweight (< 18.5): May indicate malnutrition or underlying health conditions.
  • Normal Weight (18.5 – 24.9): Associated with lower risks of cardiovascular disease and metabolic conditions.
  • Overweight (25.0 – 29.9): Slightly elevated risk for health complications.
  • Obesity (≥ 30.0): Higher risk for hypertension, type-2 diabetes, and cardiovascular issues.

Frequently Asked Questions

Is BMI accurate for athletes?
BMI does not differentiate between muscle mass and fat mass. Trained athletes with high muscle density may score in the overweight range despite having low body fat.

Is my health data private?
Yes. This calculation is executed 100% locally in your web browser. No medical or physical data is transmitted to servers.