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

Dog Pregnancy Calculator - Estimate a pregnant dog's due date from a breeding date, ovulation date, LH surge, or the first day of diestrus. Review the expected whelping window, current gestation day, week-by-week progress, key veterinary timing points such as ultrasound and X-ray windows, and practical reminders for preparing a safe whelping setup, staffing the final week, planning transport limits, and avoiding overconfidence in a single due date when the breeding record is less precise. New

Due Date Calculator - 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.

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

hCG Doubling Time Calculator - Calculate the doubling time between two beta hCG (human chorionic gonadotropin) blood test results. Enter your two hCG values and the time between the draws to see your doubling time in hours, your 48-hour rise percentage, and your daily growth rate. A visual growth curve plots your result against the normal 48-72 hour doubling band, with level-aware reference ranges and a clear, color-coded interpretation of whether your hCG is rising as expected in early pregnancy.

How Many Weeks Pregnant Am I? - 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.

Implantation Calculator - Estimate your implantation window from your ovulation date or last menstrual period (LMP). See a day-by-day implantation probability curve, the most likely implantation date, the earliest reliable pregnancy test dates, your expected period, and your estimated due date — all on a clear, animated timeline based on published implantation-timing research. New

IVF Due Date Calculator - Calculate your pregnancy due date from your IVF embryo transfer date. Works for a Day-3 (cleavage) or Day-5/Day-6 (blastocyst) transfer, fresh or frozen (FET). See your estimated due date, egg-retrieval and equivalent LMP dates, how many weeks pregnant you are today, and a full pregnancy milestone timeline on an animated 40-week trimester chart. New

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

Pregnancy Calorie Calculator - 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.

Pregnancy Weight Gain Calculator - 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.