Health works out your BMI and weight category, your BMR (the energy you burn at rest) and your daily calorie needs for your activity level, plus rough targets for losing or gaining weight. Metric or imperial. It's an estimate for general guidance, not medical advice — nothing is uploaded.

Height (cm)

Weight (kg)

Age

Sex

Activity level

BMI is weight ÷ height² and doesn't distinguish muscle from fat, so it's a rough screen only. BMR uses the Mifflin–St Jeor equation; daily calories multiply it by your activity factor. Weight-change targets assume roughly 7,700 kcal per kg (3,500 kcal per lb). These are general estimates — not a substitute for advice from a doctor or dietitian. Everything runs on your device.