Body Mass Index

Height unit
Height (cm)
Weight unit
Weight (kg)

Reference chart

BMI Category
< 18.5 Underweight
18.5 – 24.9 Normal weight
25.0 – 29.9 Overweight
30.0 – 34.9 Obese (Class I)
35.0 – 39.9 Obese (Class II)
≥ 40.0 Obese (Class III)

BMI history — calculate multiple times to track changes.