Finance & Everyday Tools
Calculate adult body mass index using metric or US customary measurements.
Enter values and calculate.
APPLICABILITY
Important: BMI is an adult screening measure, not a diagnosis. It is not suitable for children, pregnancy, or individualized body-composition assessment. Medical disclaimer
STEP BY STEP
ACCURACY & LIMITS
HELP
The calculator uses the formula shown on this page and keeps full numeric precision internally before formatting the result. WHO and CDC adult cut-offs classify BMI below 18.5, 18.5–24.9, 25.0–29.9, and 30.0 or above for screening; BMI is not a diagnosis and does not directly measure body fat.
No. The calculation or processing runs locally in your browser. UtiliNest does not receive or store the values you enter.
Yes. The inputs, result controls, and explanatory content are designed for current mobile and desktop browsers.
Applicability: Global adult screening, WHO and CDC references. Result classification: Health screening estimate. BMI is an adult screening measure, not a diagnosis. It is not suitable for children, pregnancy, or individualized body-composition assessment.
SOURCES
Reviewed against the references below on July 26, 2026. Links open the source publisher's website. Read the source policy