Enter your ultrasound date and the gestational age reported on the scan (weeks + days) to get your estimated due date. Ultrasound date Gestational age at scan — weeks Gestational age at scan — days Calculate > EDD: — Gestational age today: — Related calculators Conception date from your scan Estimate conception and the likely … Read more

Enter 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 estimate a due date from a specific event? Enter an intercourse date or estimated conception date to get a useful timeline, including likely LMP, gestational age, and pregnancy milestones. Intercourse Date Conception Date Date of Intercourse Assumes conception happens 0 to 2 days after intercourse. Use the Conception Date tab if you know … Read more

Reviewed by Dr. Grace Ramosena, MBChB on Jan 25, 2026 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 … 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 to estimate your conception date, likely intercourse window, fertile window, and 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 (from … Read more

Reviewed by Dr. Grace Ramosena, MBChB on Jan 25, 2026 Estimate miscarriage risk by week and day. For the most accurate assessment, please include your maternal age, heartbeat status, prior history, and BMI. Maternal Age Week of Pregnancy Day (0-6) Medical History & Ultrasound (Refines Accuracy) Have you had an ultrasound? No / Not yet … Read more

Find your estimated pregnancy chance after one encounter where no contraception was used. This tool weighs cycle day, optional age/BMI, and emergency contraception timing to estimate percent risk, a 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 emergency contraception? … Read more

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) Calculate … Read more