Calculate BMI
Calculate adult body mass index and a general adult screening category.
Input & settings
How to use this tool
Enter kilograms, centimetres and age 20 or above. BMI = weight / height in metres squared. Categories use the unrounded result.
Limits and behavior
Uses CDC general adult thresholds. This is not an ethnicity-specific risk assessment or a direct body-fat measurement. Source: https://www.cdc.gov/bmi/adult-calculator/ Educational estimate only. Not a diagnosis or a prescribed calorie intake. Not suitable for children, pregnancy, lactation, acute illness or individualized clinical decisions. These population equations may perform differently across ethnicities, muscularity and health conditions. Inputs remain in your browser. Input is limited to 1 MB and output to 3 MB. No input content is saved by CraftAI.
Estimate adult body mass index
Use adult height and weight to calculate BMI and a general population-level screening classification.
Can BMI alone determine an individual's health or body fat?
No. BMI is a screening metric and does not directly measure body composition or diagnose health conditions.
Related tools: estimate body fat percentage · calculate basal metabolic rate