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Free toolsPregnancy & Fertility Calculators
Free, instant calculators for your whole journey — due date, how far along you are, your pregnancy calendar, ovulation and your fertile window.
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Due Date Calculator
Estimate your due date from LMP, conception or IVF.
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Week Calculator
How many weeks & days pregnant are you today?
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Month Calculator
Which month of pregnancy (1-9) are you in?
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Pregnancy Calendar
Your full timeline of milestones & appointments.
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Ovulation Calculator
Find your ovulation day and fertile window.
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Fertile Window Calculator
Your 6-day fertile window and best days to try.
Frequently asked questions
Are the Baby Circle calculators free?
Yes — all pregnancy and fertility calculators on Baby Circle are free to use, with no sign-up required.
Are the results accurate?
They give reliable estimates based on standard medical formulas, but every pregnancy is different. Your doctor confirms your dates by ultrasound.
Related
Note: These calculators give estimates for general guidance only and are not a substitute for medical advice. Your doctor confirms your dates and due date by ultrasound.