USA 2026 calculator
US BMI Calculator (ft/lb)
Calculate adult body mass index using feet, inches and pounds. BMI is a screening number, not a diagnosis.
This tool provides an estimate for informational use. Check official federal, state, school, employer or medical sources before relying on results.
FAQ
Is BMI used in the US?
Yes. BMI is commonly used as a simple adult screening measure in the United States.
Is BMI a medical diagnosis?
No. BMI does not measure body fat directly and should not replace medical advice.
Does this work for children?
No. Children and teens use age- and sex-specific BMI percentiles.
Why use 703?
The 703 factor converts the imperial formula using pounds and inches.