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Calculate your due date, conception date, and pregnancy milestones.
Pro includes weekly pregnancy updates, kick counter, contraction timer, and hospital bag checklist.
Due date = Last Menstrual Period (LMP) + 280 days (40 weeks). This is known as Naegele's rule.
Only about 5% of babies are born on their exact due date. Most are born within 2 weeks before or after. The due date is an estimate.
Pregnancy Calculator is part of BriskTool's collection of free online tools. All processing runs entirely in your browser for maximum privacy and speed.