Health & body
General estimates using standard clinical formulas. 2 tools, all free and all running in your browser.
Body mass index is a quick screening number that compares your weight against your height. It will not tell you whether you are healthy, but it is the measure most clinics start from, and it takes two inputs.
Your body spends energy keeping you alive before you move at all. This estimates that baseline, scales it for how active you are, and gives the daily calorie figure that would keep your weight steady.