All Calculators

11 free, private calculators for every stage — from trying to conceive to your toddler’s nap schedule.

🤰 Pregnancy

Pregnancy CalculatorHow many weeks pregnant you are, your trimester and key dates.Due Date CalculatorEstimate your due date from your last period, conception, IVF or ultrasound.Conception CalculatorWork out when you conceived from your due date or last period.

🌸 Getting Pregnant

Ovulation CalculatorFind your fertile window and most likely ovulation day.Period CalculatorPredict your next periods and see your cycle at a glance.When to Take a Pregnancy TestThe earliest day to test and the day results are most reliable.

🍼 Baby & Child Age

Baby Age CalculatorYour baby’s exact age in days, weeks and months.Chronological Age CalculatorExact age in years, months and days for school and test scoring.

📏 Growth & Percentiles

Baby Percentile CalculatorWeight, length and head circumference percentiles (WHO, 0–24 months).

🌙 Feeding & Sleep

Baby Sleep ScheduleSleep needs, naps and a sample day for every age from newborn to 3.Wake WindowsWake windows by age and a nap-time calculator for today.