Biological

Calculate weight loss or gain percentage, goal progress, weight remaining, average weekly change and an arithmetic goal-date projection.

Body Fat Calculator Estimate adult body-fat percentage with a circumference equation commonly called the U.S. Navy method. The calculator also shows a separate BMI-based estimate, fat mass and lean mass so the two models are not confused. Estimate only: tape placement, hydration, body shape and the selected equation profile can materially change the result. This … Read more

Estimate ovulation, a broader fertile window and upcoming period dates from your last period, average cycle, luteal phase and cycle variation.

BMI Calculator Calculate adult body mass index, BMI Prime, the weight range associated with BMI 18.5–24.9 and the weight corresponding to an editable target BMI. BMI is a screening measure, not a diagnosis or direct measurement of body fat. UnitsMetric — kg and cmUS customary — lb, ft and in Age (years)This tool uses adult … Read more

Calorie Calculator Estimate adult basal metabolic rate (BMR), maintenance calories, an adjustable calorie target and macronutrient grams. Results are planning estimates, not a diagnosis or individualized nutrition prescription. UnitsMetric — kg and cmUS customary — lb, ft and in Mifflin–St Jeor equation profileFemale coefficient (−161)Male coefficient (+5)The published equation uses two sex-specific constants. Choose the … Read more