Simple BMI Calculator

A lightweight health calculator that instantly computes your BMI (Body Mass Index) from just your height and weight, and shows your range — underweight to severely obese — on a clear color gauge.

■ Key Features
- Enter height (cm) / weight (kg) / age / sex → instant BMI (updates live)
- BMI range gauge: Underweight / Normal / Overweight / Obese Class 1 / Obese Class 2
- Switch between the Asia-Pacific standard (default, used by the Korean Society for the Study of Obesity) and the WHO standard in Settings
- BMR (Basal Metabolic Rate, Mifflin-St Jeor formula) plus activity level for daily recommended calories
- Ideal weight range and the difference from your current weight
- Korean / English support, switchable in-app

■ Who it's for
- Anyone starting a diet or workout routine who wants a quick check on where they stand
- Anyone who wants to make sense of the BMI number on a health checkup report
- Anyone who wants a quick "check right now" tool without sign-up or history tracking

No sign-up, no data sent to a server, no promotional notifications — everything you enter stays on your device.