Evidence-based pregnancy calculators designed with your privacy in mind. All calculations are performed locally in your browser — nothing is stored or transmitted.
Calculate your estimated due date based on your last menstrual period using Naegele's rule.
Find out which pregnancy week you are in and what trimester.
Track your fertile window and predict ovulation dates.
Estimate when conception likely occurred from your due date.
Calculate key IVF dates including egg retrieval, implantation, and due date.
Track healthy pregnancy weight gain against IOM guidelines.
See your baby's size, length, weight, and milestones week by week.