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BMI Calculator

Enter your height and weight to calculate your Body Mass Index (BMI) and see which category you fall into.

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How to use BMI Calculator

  1. Select your preferred unit system (metric or imperial).
  2. Enter your height.
  3. Enter your weight.
  4. Click Calculate to see your BMI and category.

What is BMI Calculator?

Body Mass Index (BMI) is a simple calculation using a person's height and weight. The formula is BMI = weight(kg) / height(m)². This calculator supports both metric (kg/cm) and imperial (lbs/ft+in) units.

BMI provides a rough indicator of whether a person is underweight, normal weight, overweight, or obese. It is not a diagnostic tool — consult a healthcare professional for health assessments.

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FAQ

What is a healthy BMI range?
For most adults, a BMI between 18.5 and 24.9 is considered normal weight. Below 18.5 is underweight, 25-29.9 is overweight, and 30+ is obese.
Is BMI accurate for everyone?
BMI is a general guideline and may not be accurate for athletes, pregnant women, elderly people, or those with different body compositions. Consult a healthcare professional for a proper assessment.

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Author

OH
Omar Hassan"The Number Cruncher"

Engineer & Unit Conversion Specialist

Omar is a mechanical engineer by training and a unit-conversion enthusiast by passion. He has built calibration systems for aerospace and automotive manufacturers and knows firsthand how a single decimal error can cost millions in rework. His mission is to make every conversion instant, accurate, and accessible to everyone, whether they are a student, tradesperson, or practicing engineer, with no advanced degree required.

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