# Overweight Calculator

> Calculate how much weight you need to lose to reach a normal BMI range.

Page: https://askcalculators.com/calculator/overweight-calculator/
Definition: https://askcalculators.com/calculator/overweight-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/overweight-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/overweight-calculator/?heightFt=5&heightIn=10&weight=200

## Inputs
- heightFt: Height (ft); type=number; optional; default=5
- heightIn: Height (in); type=number; optional; default=10
- weight: Weight (lbs); type=number; optional; default=200

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

## Formula
BMI = weight ÷ height² × 703; reference weight uses BMI 24.9 and difference = current weight − reference weight.

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