What is a healthy BMI range?

According to the World Health Organization, a BMI between 18.5 and 24.9 is considered normal and healthy for adults.

Does BMI apply equally to men and women?

BMI uses the same formula for adult men and women, though women typically have more body fat than men at the same BMI.

WHO Standard • Metric & US Units

BMI Calculator

Calculate your Body Mass Index (BMI), ideal weight range, and WHO health risk categorization instantly.

Body Metrics

Gender

Age

yrs

Height (Centimeters)175 cm

Weight (Kilograms)72 kg

BMI Result & Analysis

Your Body Mass Index

23.5

Normal Weight (18.5 – 24.9)

Optimal weight range associated with lowest risk of cardiovascular illnesses.

UnderweightNormalOverweightObese

23.5

Ideal Weight Range

56.7 – 76.3 kg

Targeting BMI 18.5 – 24.9

Weight Difference

Perfect Healthy Range

Within optimal bounds

World Health Organization (WHO) BMI Scale

Category	BMI Range (kg/m²)	Health Risk Level
• Underweight	< 18.5	Increased nutritional deficiency & osteoporosis risk
• Normal Weight	18.5 – 24.9	Lowest cardiovascular & metabolic disease risk
• Overweight	25.0 – 29.9	Moderate risk of high blood pressure and cholesterol
• Obese Class I	30.0 – 34.9	High risk of Type 2 diabetes and heart strain
• Obese Class II & III	≥ 35.0	Very high clinical risk; medical consult advised

Frequently Asked Questions

BMI is calculated by dividing weight in kilograms by height in meters squared: BMI = weight(kg) / [height(m)]². In US Imperial units, the formula is: BMI = 703 × weight(lbs) / [height(in)]².

No. BMI evaluates overall body mass relative to height. Because dense muscular tissue weighs more than fat, athletes, bodybuilders, and heavy lifters may register as "overweight" while maintaining very low body fat percentages.

According to the World Health Organization and CDC, a healthy adult BMI ranges from 18.5 to 24.9 regardless of gender.

Interpreting Your Score

BMI is a non-invasive screening metric used by physicians worldwide. For comprehensive body composition analysis, consider pairing BMI with:

Waist Circumference: Waist over 35 inches (women) or 40 inches (men) signals higher visceral fat risk.
Waist-to-Hip Ratio: Measures body fat distribution around vital abdominal organs.
DEXA / Bio-impedance: Pinpoints exact percentages of skeletal muscle mass vs adipose fat tissue.

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