Who is this calculator for?

Adults aged 20+. BMI is a screening measure, not a diagnosis or medical advice, and does not apply to children, pregnancy or very muscular builds.

What is the healthy range?

The WHO adult healthy BMI range is 18.5 inclusive to 25 exclusive. The tool converts those boundaries to weights for your height.

BMI Prime is BMI divided by 25. Ponderal index divides weight in kilograms by height in metres cubed.

ToolHub

BMI Calculator

Calculate adult BMI, WHO category, BMI Prime and healthy weight boundaries in metric or imperial units. Screening only for adults 20+.

Stable

Online

Choose display units, then enter an adult’s height and weight.

Input system

Height unit

Height (cm)

Weight (kg)

BMI is a screening measure for adults aged 20+, not a diagnosis or medical advice. It does not apply to children, pregnancy or very muscular builds.

Result

Body mass index: 24.22
WHO adult category: Healthy weight (18.5 to <25)
Healthy lower weight boundary: 53.46 kg
Healthy upper weight boundary (exclusive): 72.25 kg
Weight to gain to enter healthy range: 0.00 kg
Weight to lose to enter healthy range: 0.00 kg
BMI Prime: 0.969
Ponderal index (kg/m³): 14.25

The healthy range includes its lower boundary and excludes its upper boundary. Gain/loss estimates target the nearest 0.01 kg inside the range and are rounded upward in the selected display unit.

WHO adult BMI scale

Underweight (<18.5)
Healthy weight (18.5 to <25)
Overweight (25 to <30)
Obesity class I (30 to <35)
Obesity class II (35 to <40)
Obesity class III (40+)

BMI 24.22: Healthy weight (18.5 to <25). Healthy adult BMI is 18.5 to below 25.