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 a pregnancy-test date. Date of Intercourse Start Date of Your Last Period ? Enter the first day bleeding started, not the day your … 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
Enter your last period and cycle length to see your fertile window and likely ovulation day on a simple calendar—plus daily pregnancy odds. Note: <0.1% means less than 1 chance in 1,000. Peer-Reviewed Science Updated Aug 2026 See Methodology Did we solve your problem today? 👍Yes 👎No ✕ Sorry to hear! What went wrong? Not … Read more
Use this pregnancy due date calculator to work out your baby’s estimated due date (EDD), how many weeks pregnant you are, and which trimester you’re in. Enter the date of your last period, conception, intercourse, IVF transfer, or an early ultrasound. Calculate based on Last Period Conception Intercourse IVF Ultrasound Calculation method Last Period DateConception … Read more
See your estimated pregnancy odds for each day in a typical cycle. Enter the start date of your last period and your average cycle length to see a research-based calendar of approximate chances. If you want to calculate how many weeks pregnant you are, use the Gestational Age Calculator. Note: <0.1% means less than 1 … Read more
Enter the date and details of one encounter to see a research-based estimate of your pregnancy chance for that single event. The result is a statistical model, not a diagnosis. This calculator shows a statistical estimate based on research averages and the details you enter. It cannot confirm pregnancy, rule out pregnancy, or replace advice … Read more