Pregnancy Trimester Finder

Enter your due date or last period to find your current week and trimester.

First day of last period:

…or due date:

⚠️ This is a personal log only — not medical advice, not a diagnosis. See a healthcare professional for any concern.

How to use

Enter LMP or due date and click Find. Everything runs in your browser.

How is the week calculated?

From the first day of your last period (or back-calculated from due date).

Is this medical advice?

No — confirm everything with your healthcare provider.

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