# Low BMI Screening Calculator

> Calculate adult BMI and show low-BMI screening ranges without diagnosing an eating disorder.

Page: https://askcalculators.com/calculator/anorexic-bmi-calculator/
Definition: https://askcalculators.com/calculator/anorexic-bmi-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/anorexic-bmi-calculator/schema.json
Version: 7.0.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/calculator/anorexic-bmi-calculator/?heightFt=5&heightIn=6&weight=100

## Inputs
- heightFt: Height (ft); type=number; optional; default=5
- heightIn: Height (in); type=number; optional; default=6
- weight: Weight (lbs); type=number; optional; default=100

## Outputs
- result: Result; format=text; primary

## Formula
BMI = weight in pounds ÷ height in inches² × 703; the result is mapped to adult thinness and healthy-weight screening ranges.

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.

Notice: BMI alone cannot diagnose an eating disorder, malnutrition, or another condition. Seek qualified care for concerns about eating or weight.