Sam Gorman

Estimate ovulation, your 6-day fertile window, next period, and the earliest practical pregnancy test day.

Estimate your due date from LMP, conception, ultrasound, or IVF transfer and see gestational age and key pregnancy dates.

Estimate conception date, due date, gestational age, fetal age, and IVF-based pregnancy dates from one known date.

Estimate healthy pregnancy weight gain by BMI, week, and one baby or twins. Compare your gain with the recommended range.

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

Estimate BMI, adult BMI category, healthy weight range by height, and how far above or below that range your weight is.

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

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.

Compare ideal weight formulas, see a healthy BMI weight range, and get a quick median summary in lb or kg.