Health

BMI calculator

BMI is the simplest screening measure of body weight: weight divided by height squared. It has limits (it cannot tell muscle from fat), but as a first look it still earns its keep.

BMI ranges

< 18.5: underweight
18.5-24.9: normal
25-29.9: overweight
≥ 30: obesity (class I-III)

In the app: Tabata Timer by fit.how has these calculators built in, plus an interval timer you can read from across the gym. See the app.