Adult BMI Calculator
Calculate adult BMI and see its screening category, with context about muscle, body composition, and individual limitations.
Published by Reeve Editorial Team · Methods and sources updated
Adult BMI
24.2
Healthy weight
Weight interval corresponding to BMI 18.5 to below 25
53.5–72.2 kg
Rounded screening reference, not an individual goal-weight recommendation. Upper boundary is excluded.
Inputs stay in this tab. Saving keeps a copy on this device until you reset or clear it.
These adult screening estimates do not apply during pregnancy. Body composition, ancestry, age, medical history, and measurement technique can change how a result should be interpreted.
How this tool works
BMI is body weight in kilograms divided by height in metres squared. CDC adult categories are underweight below 18.5, healthy weight from 18.5 to below 25, overweight from 25 to below 30, and obesity from 30. Categories use the unrounded result.
The displayed weight interval translates BMI 18.5 to below 25 back into kilograms or pounds for the entered height. It is a screening reference, not a prescribed goal. This tool uses the CDC adult framework for ages 20 and over.
Sources
Frequently asked questions
Can BMI distinguish muscle from fat?
No. BMI relates total weight to height. It does not identify the tissues that make up that weight.
Does this assess my overall health?
No. Measurements, history, blood tests, activity, and other individual factors can change how a clinician interprets BMI.