BMI Calculator

Please enter a valid height (1-300 cm)
Please enter a valid weight (1-500 kg)

Your Results

Enter your height and weight to calculate your BMI

BMI Categories

  • Underweight Less than 18.5
  • Normal weight 18.5 - 24.9
  • Overweight 25 - 29.9
  • Obese 30 or greater

Understanding Body Mass Index (BMI)

What is BMI?

Body Mass Index (BMI) is a simple measurement using your height and weight to work out if your weight is healthy. The BMI calculation divides an adult's weight in kilograms by their height in metres squared. For example, A BMI of 25 means 25kg/m².

BMI Ranges

For most adults, an ideal BMI is in the 18.5 to 24.9 range. The ranges are:

  • Below 18.5 – Underweight
  • 18.5 to 24.9 – Healthy weight
  • 25 to 29.9 – Overweight
  • 30 or greater – Obese

How to Use the BMI Calculator

Using our BMI calculator is simple:

  1. Choose your preferred unit system (metric or imperial)
  2. Enter your height (in centimeters or feet/inches)
  3. Enter your weight (in kilograms or pounds)
  4. Click "Calculate BMI" to see your results

BMI Limitations

While BMI is a useful measurement for most people, it does have some limitations:

  • It may overestimate body fat in athletes and muscular people
  • It may underestimate body fat in older persons and those who have lost muscle
  • It doesn't account for where fat is stored in the body
  • It may not be suitable for children, pregnant women, or certain ethnic groups

Why BMI is Important

Maintaining a healthy BMI is important because it can help reduce your risk of various health conditions, including:

  • Heart disease and high blood pressure
  • Type 2 diabetes
  • Certain cancers
  • Osteoarthritis
  • Sleep apnea and breathing problems

Tips for Maintaining a Healthy BMI

If you're looking to maintain or achieve a healthy BMI, consider these tips:

  • Eat a balanced, calorie-controlled diet
  • Exercise regularly (aim for 150 minutes of moderate activity per week)
  • Get adequate sleep
  • Manage stress levels
  • Stay hydrated