Everyday
BMI Calculator
Calculate adult body mass index from weight and height using the standard BMI formula.
- Free to use
- Runs in your browser
- Level B · Industry formula
- Last reviewed 2026-08-16
How to use this calculator
Enter the requested values and select Calculate. The result is computed locally in your browser using the formula shown on this page.
Understanding the result
This calculator reports the mathematical result without assigning unsupported ratings or professional judgments. Context may affect how the result should be interpreted.
Calculation method
BMI = 703 × weight (lb) ÷ height² (in²).
Calculator guide
About the BMI Calculator
Body mass index is a weight-to-height screening ratio used for population and general screening contexts.
What to keep in mind
- BMI is a screening measure, not a diagnosis.
- It does not directly measure body fat or individual health.
- Clinical interpretation should consider additional information and professional guidance.
Formula & methodology
BMI = 703 × weight (lb) ÷ height² (in²)
Review standard: Level B · Industry formula. How calculator reviews work.CalculateMeasure performs the arithmetic locally in your browser. The displayed result depends on the values and units you enter.
Frequently asked questions
What does this calculator calculate?
Body mass index is a weight-to-height screening ratio used for population and general screening contexts.
Can I use the result for an important decision?
Use the result as a calculation aid and verify the inputs, assumptions, and applicable professional or regulatory requirements before relying on it for an important decision.
Does CalculateMeasure store the values I enter?
This calculator performs its arithmetic in your browser. The calculator itself does not need to send your entered values to a server to produce the result.