Pregnancy Calculators

Calculate your increased daily caloric needs while breastfeeding. Get personalized recommendations based on your lactation phase, activity level, and body metrics.

Estimate a pregnant dog's due date from the breeding date, ovulation date, LH surge or first day of diestrus. See the whelping window, current gestation day, week-by-week progress and the ultrasound and X-ray timing points.

Calculate your pregnancy due date based on last menstrual period or conception date. Get a complete pregnancy timeline with trimester milestones, week-by-week development, and important dates.

Calculate gestational age in weeks and days from your last menstrual period or from ultrasound measurements (CRL, BPD, FL, HC). Get the estimated due date, trimester, a baby size comparison and week-by-week development milestones.

Calculate the doubling time between two beta hCG results. Enter both values and the hours between draws to see doubling time, the 48-hour rise percentage and daily growth rate, plotted against the normal 48-72 hour band.

Calculate how many weeks pregnant you are based on your due date, last menstrual period (LMP), or conception date. Includes trimester progress, baby size comparison, and weekly milestones.

Estimate your implantation window from your ovulation date or last menstrual period. See a day-by-day probability curve, the most likely implantation date, the earliest reliable test dates, your expected period and your due date.

Calculate your due date from an IVF embryo transfer. Works for Day-3 cleavage or Day-5 and Day-6 blastocyst transfers, fresh or frozen. See the due date, retrieval and equivalent LMP dates, and a 40-week milestone timeline.

Create your personalized pregnancy calendar with week-by-week development milestones, trimester breakdown, baby size comparisons, key appointment reminders, and due date countdown.

Calculate your daily calorie needs during pregnancy based on pre-pregnancy weight, height, age, activity level, and gestational week. Uses IOM guidelines and Mifflin-St Jeor equation for accurate trimester-specific recommendations.

Calculate your recommended pregnancy weight gain based on IOM 2009 guidelines. Track week-by-week progress, see your trimester breakdown, and get personalized recommendations for singleton or twin pregnancies.