BMI Calculator

BMI Calculator is a clean, fast, privacy-first way to work out your Body Mass Index and understand what it means. No sign-up, no ads, no internet required — your health data never leaves your phone. Enter your height and weight, tap Calculate, and instantly see your BMI score, your category, and where you sit on the healthy-weight scale. It's built to be the quickest BMI tool you'll use. WHY YOU'LL LIKE IT • Instant results — open the app, enter height and weight, and get your BMI in one tap. • Clear visual scale — a color-coded gauge shows exactly where your BMI falls: underweight, normal, overweight, or obesity. • Metric and imperial — switch freely between kg/lb and cm/ft-in. Your numbers convert automatically. • Healthy weight range — see the weight range that matches a normal BMI for your height. • Estimated BMR — when you add your age, get an estimate of your Basal Metabolic Rate (daily calories at rest). • Track your progress — every result is saved to a private history so you can see how your BMI changes over time. • Share your result — send a clean summary card to yourself or anyone you choose. • Light & dark themes — pick light, dark, or follow your system setting. • 100% offline — works with no connection, no account, and no permissions. PRIVACY FIRST All of your measurements and history are stored only on your device. The app requests no permissions — no internet, no location, no contacts, no camera. Nothing is uploaded, tracked, or shared. ACCURATE & TRANSPARENT BMI is calculated with the standard formula — weight (kg) divided by height (m) squared — and classified using the World Health Organization adult categories. The exact value and category are always shown together, so the meaning is never left to color alone. A NOTE ON HEALTH BMI Calculator is a general wellness and information tool. It is a screening measure and does not directly measure body fat or overall health, and it is not a medical diagnosis. It does not diagnose disease, replace a doctor, or guarantee any outcome. Please consult a qualified healthcare professional for medical decisions.