🤰 Due Date Calculator

Calculate your pregnancy due date.

First Day of Last Period

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Estimated Due Date

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Weeks Along

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Trimester

Due Date = LMP + 280 Days

Assumes a 28-day cycle. Only 5% of babies arrive on their exact due date. Confirm with your OB/GYN.

How accurate?

Your OB will confirm with an early ultrasound, which is more accurate for dating.