Every key date, mapped to your pregnancy Pregnancy Milestone Calculator Enter your last period or due date to see real calendar dates for every major prenatal milestone — from your first appointment to your due date — with what’s next always front and center. What do you know? First day of my last periodMy estimated … Read more
Based on WHO Child Growth Standards, 0–12 months Baby Weight Percentile Calculator Enter your baby’s sex, age, and current weight to see roughly where that falls on the WHO weight-for-age curve. What matters far more than any single number is whether your baby keeps tracking near their own curve over time. Sex BoyGirl Age — … Read more
From one completed cycle Luteal Phase Calculator Enter the day you ovulated and the day your next period actually started, and this works out your luteal phase length — the gap between the two that tends to matter most for fertility timing. Ovulation date Date your next period started Calculate my luteal phase — — … Read more
Sperm Survival Calculator Sperm Survival Calculator Estimate how long sperm can survive in different environments. Where is the sperm located? Select an environment…Inside female reproductive tractOn a dry surface (clothing/skin)In a hot tub or bath waterIn a sterile specimen cupFrozen (Cryopreservation) Please select an environment to continue. Is fertile cervical mucus present? (Typically during ovulation) … Read more
Missed Pill Guidance Answer a few questions about the pill you missed to see the standard next steps — including whether to use backup contraception or consider emergency contraception. What this tool is and isn’t. This gives general guidance based on widely published missed-pill rules — it does not calculate a personal pregnancy-risk percentage, since … Read more
Ovulation Date Calculator Enter the first day of your last period and your average cycle length to estimate your next ovulation date, fertile window, and best days to try to conceive. First day of last period The most recent day your period started. Average cycle length 28 days Counted from the first day of one … Read more
Pregnancy Week Calculator Find out how many weeks and days pregnant you are, your current trimester, and your estimated due date — based on your last period, due date, or conception date. Date Calculate as of Defaults to today — change this to check a past or future date. Enter a date above to see … Read more
Days past ovulation DPO Calculator Enter your ovulation date to find out exactly how many days past ovulation (DPO) you are today, along with your implantation window, testing timeline, and expected period date. Ovulation date Calculate for defaults to today Calculate my DPO — — Implantation window — Expected period — Testing timeline Earliest possible … Read more
When to test, and how confident to be in the result Pregnancy Test Calculator Fill in whatever you know — your last period, an ovulation date, or the date you had intercourse — and this works out your estimated ovulation, implantation window, and the earliest, recommended, and most reliable days to take a test. First … Read more
For parents & caregivers Breastfeeding Eligibility & Risk Calculator Answer a few questions about you and your baby. You’ll get a plain-language summary of which topics are safe to set aside and which ones are worth raising with your doctor, midwife, or lactation consultant. About your baby My baby has been diagnosed with classic galactosemia … Read more