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.

Enter two beta hCG blood test levels and the hours between draws to calculate doubling time, daily growth rate, and 48-hour rise percentage.

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.

Enter your ovulation date or last menstrual period to estimate your implantation window, peak probability date, earliest pregnancy test day, and due date.

Enter the transfer date and day-3, day-5, or day-6, fresh or frozen. See the due date, retrieval date, equivalent LMP, and a 40-week 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.

Enter weight and week to see the IOM 2009 gain range for a singleton or twin pregnancy, broken out by trimester.