Health

Estimate daily fat grams from calories, see a recommended range, and get a saturated fat upper limit in grams.

Estimate maintenance calories, BMR, and a daily calorie target for losing, maintaining, or gaining weight.

Estimate adult or child eGFR from creatinine and cystatin C, with G category, interpretation, and optional deindexed result.

Classify body shape or somatotype from measurements, with ratios, frame size, and a borderline note for close calls.

Estimate body surface area from height and weight, choose a formula, and compare common BSA equations in m2 and ft2.

Estimate BAC from weight, sex, drinks, and time. See pure alcohol, standard drinks, and rough time below 0.08% and 0.00%.

Estimate due date, pregnancy age, conception date, trimester, and key milestone dates from LMP, conception, IVF, or ultrasound due date.

Estimate Army body fat from tape measurements and compare your result with the age- and sex-based Army limit.

Calculate running pace, finish time, distance, and split times in miles, kilometers, meters, or track laps.

Estimate lean body mass with Boer, James, and Hume formulas or calculate it directly from body fat percentage.