What is a healthy BMI range?

A healthy BMI is typically between 18.5 and 24.9 for adults. Below 18.5 is considered underweight, 25-29.9 is overweight, and 30 or above is classified as obese according to WHO standards. However, BMI doesn't account for muscle mass, bone density, age, sex, or body composition, so it should be used as a general screening tool rather than a definitive health assessment.

Is BMI accurate for athletes and muscular individuals?

BMI can be misleading for athletes and individuals with high muscle mass. Since muscle weighs more than fat, muscular people may have a high BMI despite having low body fat. For these individuals, other measurements like body fat percentage, waist circumference, or waist-to-hip ratio provide better health indicators. BMI works best for average sedentary to moderately active populations.

Does BMI vary by age and gender?

Standard BMI calculations are the same for adult men and women, though women naturally have more body fat. For children and teens (ages 2-19), BMI is age and sex-specific using percentile charts. For older adults (65+), slightly higher BMI values (25-27) may be protective and associated with better health outcomes. Always consult healthcare providers for personalized interpretation.

What are the limitations of BMI?

BMI has several limitations: it doesn't distinguish between muscle and fat mass, doesn't consider fat distribution (visceral vs. subcutaneous), ignores bone density, and doesn't account for ethnicity differences in body composition. Asian populations may have health risks at lower BMI values, while some Pacific Islander populations may be healthy at higher values. BMI should be one tool among many for assessing health.

Health

BMI Calculator

Calculate your Body Mass Index and healthy weight range.

Your BMI--

Enter details

1518.5253040

BMI Categories

Underweight< 18.5

Normal weight18.5 – 24.9

Overweight25 – 29.9

Obese≥ 30

How to Use This Calculator

Enter Your Height

Input your height accurately in your preferred unit (feet and inches, or centimeters). For the most accurate measurement, measure yourself without shoes against a flat wall.

Enter Your Weight

Input your current weight in pounds or kilograms. Weigh yourself in the morning before eating for the most consistent measurement.

View Your Results

Your BMI will be calculated automatically along with your weight category (underweight, normal, overweight, or obese) and a healthy weight range for your height.

Interpret Carefully

Remember that BMI is a screening tool, not a diagnostic. Consider other factors like body composition, fitness level, and overall health. Consult a healthcare provider for personalized advice.