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 Enter one intercourse date. Use the Conception Date tab if you know that date. Estimated Date of … 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 ? Enter the first day bleeding started, not the day your … 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

General miscarriage information reviewed by Dr. Grace Ramosena, MBChB on Jan 25, 2026 Estimate miscarriage risk by week and day. For a more tailored estimate, include your maternal age and any available heartbeat, pregnancy-history, and height-and-weight details. Maternal Age ? Enter the age of the pregnant person. Age changes the background risk estimate. Week of … 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 ? Enter the first day bleeding started, not the … 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

This calculator gives an estimate based on timing, protection, and cycle details. It cannot confirm pregnancy; use a pregnancy test if your period is late or symptoms continue. Peer-Reviewed Science Updated Dec 2025 Did we solve your problem today? 👍Yes 👎No ✕ Sorry to hear! What went wrong? Not relevant, didn’t meet my needs Hard … Read more

Enter your cycle dates and details to view your estimated next period, ovulation, fertile window and pregnancy calendar in one dashboard. Peer-Reviewed Science Updated September 2026 Did we solve your problem today? 👍Yes 👎No ✕ Sorry to hear! What went wrong? Not relevant, didn’t meet my needs Hard to use / Confusing interface Buggy / … Read more