Calculators
Quick calculators
Your calories, your date, your bodyfat and your waist, a minute each.

Your calories
How many calories a day hold your weight where it is.

Your protein
Your typical range for losing fat, and the line under which it is too low.

Calories to lose, and your date
What to eat each day to reach your goal, and the day you get there.

Bodyfat from a tape
Three tape measurements give your bodyfat as a range.

Losing fat or muscle?
Two weigh-ins in. What you lost in fat and in lean mass out.

Waist check
Your waist against the US lines for heart and diabetes risk.

Your personalized guide
All of it in one place: your calories, your date, your protein and your first habits.
Weigh in each morning on a Withings or any Apple Health scale and Gyroscope logs your weight and bodyfat on its own, free on any plan. Open Gyroscope