BMI Calculator

Enter height and weight to calculate BMI, adult BMI category, and related estimates.

Height (cm)

Height (feet)

Height (inches)

Weight (kg)

Weight (lb)

Age

Sex

Waist (cm, optional)

Waist (in, optional)

Activity Level

Body Mass Index 0.0

BMI Scale

Under 18.5 18.5 to 24.9 25 to 29.9 30+

BMI CategoryHealthy Weight

Adult Reference Range0

Range Difference0

BMI Prime0

Ponderal Index0

Estimated Body Fat0%

Waist to Height RatioOptional

BMR Estimate0 kcal

Daily Calories Estimate0 kcal

Metric Height0 cm

Metric Weight0 kg

BMI NoteAdult scale

BMI is a screening estimate, not a diagnosis. It may not reflect body composition for athletes, older adults, pregnant people, or people with high muscle mass. For children and teens, BMI should be assessed by age and sex percentiles with a qualified health professional.

BMI Category Chart

BMI Category	BMI Range	Your Status	General Note