Pregnancy & Fertility Calculators

Find your ovulation day and fertile window from your last period and cycle length. Shows your next three cycles and the due date if you conceive.

Estimate your due date from your last period, a conception date, or an IVF embryo transfer. Shows gestational age, trimester, and every key milestone date.

Predict your next six period start and end dates from your cycle length and last period. Includes your estimated ovulation date and what counts as a normal cycle.

Estimate when you conceived from your due date or your last period. Shows the probable conception window, the most likely days, and how accurate the estimate is.

How much weight to gain in pregnancy, based on your pre-pregnancy BMI and the IOM/NASEM 2009 guidelines. Singleton and twin ranges, with a week-by-week target.

Find how many weeks and days pregnant you are from your last period or due date. Shows your trimester, embryonic age, days left, and every screening milestone.