The Pregnancy Calculator can estimate a pregnancy schedule based on the provided due date, last period date, ultrasound date, conception date, or IVF transfer date.
• Choose your calculation baseline: Due Date (Default), Last Period (LMP), Conception Date, Ultrasound, or IVF Transfer Date.
• View your estimated due date (EDD), real-time gestational age (weeks/days), trimester breakdown, and interactive 40-week fetal size guide.
| Milestone | Date Range / Target | Weeks |
|---|---|---|
| Estimated Conception | Apr 5, 2026 | Week 2 |
| First Trimester Ends | Jun 27, 2026 | Week 13 |
| Second Trimester Ends | Oct 3, 2026 | Week 27 |
| Full Term Reached | Dec 6, 2026 | Week 37 |
| Estimated Due Date | Dec 27, 2026 | Week 40 |
Weekly fetal fruit size comparisons, lengths, weights, and physiological milestones calculated from your LMP (Mar 22, 2026).
Eyebrows, eyelashes, and hair well-defined; senses of touch and spatial orientation maturing.
Standard obstetric care calculates human gestation from the first day of the Last Menstrual Period (LMP) rather than the conception date, because the onset of menses is typically a known objective date.
Adds 1 year, subtracts 3 months, and adds 7 days to the first day of LMP (or 280 total days). Adjusts for cycle lengths deviating from 28 days.
Crown-Rump Length (CRL) measured via ultrasound between 8 and 13 weeks is the most accurate clinical method (±3–5 days).