Your due date, thoughtfully estimated
A small, calm tool for one meaningful moment. Add the first day of the last period to get an estimated due date and start picturing the months ahead.
Start with the date you know
Enter the first day of the last menstrual period. This is the standard date used for an early due date estimate and gives you a simple place to begin.
Take your best guess if you are not completely sure. You can always update it later.
Estimated due date
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This estimate is based on a standard 280-day pregnancy counted from the first day of the last period. A GP, midwife, or dating scan may refine the date later.
A gentle reminder
It is completely normal to feel excited, nervous, hopeful, or all three at once. This page is designed to keep the maths simple while still feeling warm, human, and easy to use.