Type your height and weight and get your BMI, the healthy range it falls into, and a rough BMR estimate — instantly, with nothing uploaded.
You step on the scale, then wonder "is this actually fine?" BMI is the quick, boring, universally-used answer — divide weight by height squared and you get one number everyone agrees on. It won't tell you everything (muscle weighs more than fat), but it's the starting point doctors use too.
Pop in your height and weight and this calculator shows the number, the band it lands in (underweight / normal / overweight / obese), and a rough BMR — the calories you'd burn doing nothing all day. Switch between metric and US units with one click.
Pick your units, enter height, weight (and optionally age + sex for BMR), and the results update as you type. Everything stays on your device.