admin Cycle tracking Missed Period Calculator Enter the first day of your last period and your average cycle length to see your expected date, exactly how late you are (if at all), and what’s worth doing next. First day of last period Average cycle length Day 1 of one period to day 1 of the next … Read more
Based on last menstrual period Gestational Age Calculator Enter the first day of your last period to see your current gestational age, trimester, estimated due date, and progress through pregnancy — all calculated using Naegele’s rule. First day of last period Calculate as of defaults to today Average cycle length (optional — refines the due … Read more
Cycle & fertility overview Menstrual Cycle & Fertility Calculator Enter your last period and average cycle length to see which phase you’re in today, your fertility status, this cycle’s key dates, and a forecast for the next three cycles. First day of last period Average cycle length Day 1 of one period to day 1 … Read more
hCG Trend Tracker Enter two blood draws for an instant doubling-time and rise reading, or log a full series of draws below to see the trend plotted over time — on a linear or logarithmic scale. This tool is for information only, not a diagnosis. hCG patterns vary a lot between healthy pregnancies. Always interpret … Read more
Due Date Calculator Estimate your baby’s due date and see exactly how far along you are today — from your last period, a known conception date, or an IVF transfer date. Last period Conception date IVF transfer First day of your last period Average cycle length 28 days is typical; adjust if your cycles usually … Read more
Educational estimate, not a diagnosis Implantation Calculator & Calendar Enter your ovulation date, or your last period and cycle length, to see your likely implantation window, the single most common day within it, and a cautious first day to test — mapped to real calendar dates. Clinical note: light spotting or mild cramping are common … Read more
Educational estimate, not a diagnosis Miscarriage Risk Calculator by Week and Day Enter your gestational age for a baseline estimate. Adding your age, any ultrasound findings, pregnancy history, and BMI refines it further. This is a statistical planning tool, not a diagnosis — it cannot see your ultrasound or symptoms the way your clinician can. … Read more
Whelping planner Dog Pregnancy Calculator Pick the date you know, and this works out an estimated due date, a realistic range around it, a live countdown, a week-by-week timeline, and a vet-visit schedule pinned to real dates for your dog. Which date do you know? Mating dateFirst day of heat (proestrus)Vet-confirmed ovulation dateVet-confirmed LH surge … Read more
Chance of Twins Calculator Estimate your odds of a twin pregnancy — fraternal or identical — based on age, family history, body size, ethnicity, and fertility treatment, using patterns from published twinning research. About this pregnancy Your age Number of previous births This is my first123 or more Conception method Natural conceptionOvulation induction (Clomid / … Read more
Implantation Calculator Estimate your implantation window and earliest reliable test date from your last period and typical cycle. First day of last period Average cycle length Days from the start of one period to the start of the next. 28 is typical, but cycles commonly range 21–35 days. Luteal phase length Days between ovulation and … Read more