OPTION A
BMI Calculator
Use BMI for a quick population-level screening estimate, interpreted with age and clinical context.
Try BMI CalculatorTOOL COMPARISON
BMI Calculator vs Body Fat Percentage Calculator
BMI uses height and weight as a screening measure; body-fat estimates use additional measurements and have their own uncertainty. Neither diagnoses health.
OPTION B
Body Fat Percentage Calculator
Use a body-fat estimate when tracking a consistent measurement method over time. Discuss health concerns with a clinician.
Try Body Fat Percentage CalculatorWhat each option does
BMI Calculator
Calculate body mass index from height and weight using metric units, with the standard adult category ranges.
Body Fat Percentage Calculator
Estimate body-fat percentage with the US Navy tape-measure method and unit selection.
How to choose
Use BMI for a quick population-level screening estimate, interpreted with age and clinical context. Use a body-fat estimate when tracking a consistent measurement method over time. Discuss health concerns with a clinician.
Before relying on a result, check the output with a small sample and confirm that the format or assumptions match your destination. Keep an original copy when converting files or changing data.