Use this calculator to estimate your chance of pregnancy from an encounter where a condom was used. Choose whether it was perfect or typical use, then (optionally) add a second method. Your result is per-act, based on peer-reviewed effectiveness data and our modelling. It’s not medical advice—just a clear way to put numbers to a … Read more
Reviewed by Dr. Grace Ramosena, MBChB on Jan 25, 2026 Use this hCG calculator with at least 2 beta-hCG blood test results to estimate doubling time or halving time, compare your rise with typical early-pregnancy ranges, and view a chart. hCG Draw 1 Date and time hCG (IU/L) hCG Draw 2 Date and time hCG … Read more
See how levonorgestrel emergency contraceptive pills compare with ulipristal acetate emergency contraceptive pills by hours since intercourse, weight/height, and number of encounters. Get your estimated pregnancy chance and your first accurate test day. Method Levonorgestrel (LNG)Ulipristal acetate (UPA) Hours since intercourse Enter a number from 0 to 168. Female age Advanced options Number of intercourse … Read more
Enter the pill type, the timing of the missed dose and intercourse, and any emergency contraception to see an estimated pregnancy chance, a broad model range, next-step guidance, and a pregnancy-test date. Pill type ? Choose Combined or POP. If you choose POP, a second field asks which formulation because missed-dose windows differ. Combined pillProgestin-only … Read more
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 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