Pregnancy, Fertility & Baby Care Calculators

Calculate your ovulation day and fertile window based on your cycle. Supports irregular cycles and PCOS mode.

See your 6-day fertile window with day-by-day conception probability based on cycle timing.

Estimate when conception occurred from your due date or ultrasound measurements.

Calculate your implantation window and early pregnancy symptom timeline from ovulation date.

Find the earliest and most accurate date to take a pregnancy test for reliable results.

Calculate your estimated due date, LMP equivalent, and gestational age from your IVF embryo transfer date. Supports Day 3, Day 5, and Day 6 transfers.

Understand how age affects monthly conception probability with evidence-based statistics.

Optimize timing for conception based on your ovulation date and sperm viability window.

Predict your next 6 months of period dates based on your cycle history with a scrollable calendar.

Analyze your cycle consistency with a 0–100 regularity score and detect irregularities from your period history.

Identify low-fertility days in your cycle using the calendar method. Educational use only — not reliable contraception.

Calculate your luteal phase length and compare to the normal 12–16 day range for cycle health.

Detect ovulation from daily basal body temperature readings with a visual temperature chart and coverline.

Calculate your estimated due date from LMP, conception date, IVF transfer, or ultrasound. Supports twins.

Find out exactly how far along you are in weeks and days with trimester milestone markers.

See your trimester stages with exact date ranges and key developmental milestones.

View your complete 40-week pregnancy calendar with appointments, screenings, and milestones.

Estimate conception date and LMP from a known birth date or due date.

Calculate an adjusted due date from ultrasound CRL or BPD measurements.

Convert pregnancy weeks to months with trimester mapping and calendar dates.

Track your pregnancy weight gain against IOM guidelines week by week. Supports singleton and twin pregnancies.

Calculate your pre-pregnancy BMI and get personalized pregnancy weight gain guidance.

Find your daily calorie needs for each trimester based on activity level and BMI.

Calculate daily hydration targets during pregnancy adjusted for activity and climate.

Assess your gestational diabetes risk with ACOG screening guidance and risk factor analysis.

Calculate daily protein needs during pregnancy based on weight and trimester.

Find safe heart rate zones and exercise intensity guidelines for each trimester.

Get daily targets for iron, folate, calcium, DHA, and key nutrients by trimester.

Plot your baby's weight, height, and BMI on WHO/CDC growth curves with percentile ranking.

Track your baby's weight gain trajectory against expected curves by age.

Predict your child's adult height using the Tanner midparental height method.

See expected milestones by age for motor, cognitive, social, and language development.

Plot your baby's head circumference on WHO/CDC percentile charts by age and sex.

Find how much total sleep your baby needs by age with nap and night sleep breakdown.

Generate a daily nap schedule based on your baby's age and wake windows.

Calculate recommended awake times between sleeps and generate a daily schedule.

Find the ideal bedtime based on your baby's age and the time of the last nap.

Calculate how much your baby should eat per feeding and per day by age and weight.

Estimate daily breast milk intake, feeding frequency, and session duration by age.

Calculate daily formula needs, bottle size, and feeding schedule by age and weight.