ToolzParkOnline Tools & Calculators

BMI Calculator

Calculate your Body Mass Index from your height and weight to see which weight category you fall into.

Please enter valid height and weight values.

Formula

BMI = weight (kg) / height (m)²
Imperial: BMI = 703 × weight (lb) / height (in)²

BMI categories

  1. Underweight — below 18.5
  2. Normal weight — 18.5 to 24.9
  3. Overweight — 25 to 29.9
  4. Obese — 30 and above
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Frequently asked questions

BMI is a general screening measure and does not account for muscle mass, bone density, or body composition. Athletes and older adults should interpret results with care.

For most adults, a BMI between 18.5 and 24.9 is considered within the normal weight range.

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