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Adult BMI and Healthy Weight Range Calculator

Adult BMI and Healthy Weight Range Calculator

Use metric or US height and weight to calculate adult BMI, its WHO classification, and a healthy-weight range for your height.

Focus mode
BMI calculator
Check adult BMI, its WHO classification, and the healthy-weight range for your height.

BMI: 22.9

Healthy weight

Healthy-weight range at this height: 56.7–76.3 kg

Formula: weight (kg) ÷ height (m)²

BMI is a screening measure, not a diagnosis. It is not intended for children or pregnancy, and local clinical thresholds can differ.

Open WHO BMI guidance

Key features

  • Accepts both kg/cm and lb/in inputs.
  • Shows BMI, its WHO adult classification, and the BMI 18.5–24.9 weight range for the supplied height.
  • Keeps the formula and non-diagnostic screening limitations visible.

How to use

  1. Choose an input unit system.
  2. Enter height and weight.
  3. Review the BMI and weight range alongside public-health guidance.

Examples

  • Quickly check adult BMI

    Enter height and weight to reference the BMI value and WHO adult classification.

  • Calculate a height-based weight range

    See the weight interval corresponding to BMI 18.5 through 24.9 at the entered height.

Privacy

Height, weight, and results are processed only in your browser and are not sent or stored.

Requirements

An adult screening estimate only; do not use it for children, pregnancy, or diagnosis. Local clinical thresholds can differ.

Common questions

Do metric and US units produce different results?
No. Pounds and inches are converted to kilograms and centimeters before applying the same BMI formula. The final displayed digit can differ due to rounding.
Can BMI alone determine health status?
No. It is an adult weight-screening estimate that does not account for muscle mass, body composition, or individual circumstances and is not diagnostic.

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