Skip to main content
DevBench
Back to HealthAll tools
⚖

BMI Calculator

HealthOffline-ready

BMI Calculator computes your Body Mass Index using BMI = weight(kg) / height²(m²) and displays the WHO category: underweight (<18.5), normal weight (18.5–24.9), overweight (25–29.9), or obese (≥30). Switch between metric (kg/cm) and imperial (lbs/inches) units. Note that BMI is a screening tool, not a diagnostic measure. Runs entirely in your browser.

Related: Body Fat EstimatorCalorie Calculator (TDEE)Water Intake

Your files and inputs stay in your browser — nothing is uploaded or stored.

Body mass index

22.9

Normal range

WHO-style categories for adults — informational only, not a diagnosis.

Body Mass Index (BMI) calculator

BMI = weight (kg) / height² (m²). The WHO classification: underweight <18.5, normal weight 18.5–24.9, overweight 25–29.9, obese ≥30. BMI is a screening tool, not a diagnostic measure — it does not account for muscle mass, bone density, age, or fat distribution.