Two numbers say a lot about your health: your BMI and your daily calorie needs. The BMI calculator turns height and weight into a body mass index and healthy weight range, while the calorie calculator estimates your basal metabolic rate (BMR) and total daily energy expenditure (TDEE) from your age, sex and activity level.
Both tools use standard clinical formulas and explain the reasoning right on the page, so results are transparent rather than a mystery number pulled from nowhere. Everything runs in your browser — your height, weight and age are never sent to a server. Treat the results as a general guide, not a medical diagnosis.