Free, private calculators for every step — trying to conceive, pregnancy, and your baby's first years. Due dates, ovulation, growth percentiles, sleep schedules and more.
Private. Secure. No sign-up required.
Estimate your due date based on LMP or conception date.
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Find your fertile window and best time to conceive.
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Predict your next periods and track your cycle.
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Work out when you likely conceived from your due date or LMP.
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Estimate your implantation window and earliest test date.
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Precise due dates from your embryo transfer or egg retrieval.
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Find out exactly how far along you are, week by week.
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Calculate hCG doubling time and early pregnancy progress.
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Try the traditional boy-or-girl chart — just for fun.
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See your healthy weight-gain range by week and BMI.
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Find weight, height and head percentiles on WHO & CDC charts.
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Build an age-based nap and sleep schedule for your baby.
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Track contractions, timing, duration and frequency.
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Your data stays on your device. We don't store your personal information.
Each tool cites the medical guidance it is based on, like ACOG and the NHS.
Created by a parent who gets it. Simple, helpful and made with care.
Built for parents in the US, UK, Australia and around the world.
Helpful guides and resources to support you before, during and after pregnancy — coming soon alongside each tool.
When ovulation happens and how timing affects your chances.
PregnancyHow doubling time works in early pregnancy.
Labor & DeliveryWhen to call your provider and head to the hospital.