Sam GormanEnter your embryo transfer date and embryo day (3/5/6) to get your estimated due date instantly. Had an IUI? The IUI due date calculator gives EDD and key milestones. Transfer date Embryo day at transfer Day 3 (cleavage)Day 5 (blastocyst)Day 6 Pregnancy type (optional) SingletonTwinsTriplets EDD is always 40 weeks; multiples often deliver earlier. We’ll … Read more
Wondering when your twins or triplets are due? Enter your details to get an instant 40-week EDD and the typical delivery window for multiples (based on the dating method you choose). Curious about odds? See the chance of twins for your age and history. Twin & Triplet Due Date Calculator Number of babies Twins Triplets … Read more
Trying to pinpoint your due date from a specific event? Whether you know the date of intercourse or your estimated conception date, our calculator accounts for key biological factors to give you the most accurate possible timeline. Intercourse Date Conception Date Date of Intercourse Estimated Date of Conception Calculate Due Date > MON 00 Estimated … Read more
Enter LMP, due date, or ultrasound to estimate your conception date and likely intercourse window. We also show a timeline of key pregnancy dates. Last Period Due Date Ultrasound First day of last period Average cycle length (days) Estimated Due Date Date of Ultrasound Gestational Age on that date Calculate Conception Date Peer-Reviewed Science Updated … Read more
Enter your DPO or LMP dates, choose your test brand, and see the estimated percent accuracy for detecting pregnancy on each day. Pregnancy Test Accuracy Calculator Estimate your test’s ability to detect pregnancy based on when you test and the test type. Enter DPO Use LMP + Cycle Days Past Ovulation (DPO) Select DPO…7 DPO8 … Read more
Enter your due date or an early-ultrasound date. We’ll estimate your conception date, most-likely intercourse day, a fertile window, and your LMP. Reverse Due Date Calculator Due Date Ultrasound Estimated due date (EDD) Pregnancy length (from LMP) weeksdays If unsure, leave at 40 weeks. Ultrasound date Gestational age at ultrasound Weeks Days (0–6) Pregnancy length … Read more
Estimate miscarriage risk by week and day. Add age and, if you like, heartbeat, prior losses/births, and BMI for a more precise result. Maternal Age Week of Pregnancy Day (0-6) Advanced Factors Optional Have you had an ultrasound? No / Not yet Yes Did you see a heartbeat? No, not yetYes, heartbeat detected Fetal Heart … Read more
Find your estimated pregnancy chance after one encounter where no contraception was used. This tool weighs cycle day (plus optional age/BMI) and any emergency contraception to give a clear percent risk, 1-in-N view, and your first accurate test day Date of Intercourse Start Date of Your Last Period Average Cycle Length (Days) Did you use … Read more
Medically reviewed by Dr. Sony Sherpa, MBBS, MD on Dec 22, 2025 Enter your last period or ovulation date to get a personalized calendar of your likely implantation window and best test day. Estimate your implantation window Ovulation date Last period date Ovulation date The first day of your last period Average cycle length (days) … Read more
Worried about a recent encounter? Our calculator helps you understand your personal pregnancy risk. Just enter the date to get a clear, science-based estimate in seconds. 💡 Powered by Peer-Reviewed Data. Learn about the science behind our calculations. Breastfeeding and no period yet? Check LAM breastfeeding birth control to see if you meet the rules. … Read more