Read more: FAQs & context
If inputs disagree
Trust your provider’s preferred dating method. Early ultrasound usually wins over uncertain LMP.
GA converter
Enter LMP, due date, or completed weeks+days — see the matching values.
Purpose, how to use it, and benefits — the interactive tool is in the card above whenever you want to jump back.
You can start from LMP, from a known EDD, or from “weeks + days pregnant” and see the other linked values using the 280-day pregnancy length from LMP to EDD.
Fill only one section at a time—LMP, EDD, or weeks and days—then tap Convert. The tool shows implied LMP, EDD, gestational age today, and Naegele-style EDD for comparison.
Ultrasound reports, apps, and midwife notes sometimes use different anchors; converting reduces confusion when you pack for hospital or book flights.
Trust your provider’s preferred dating method. Early ultrasound usually wins over uncertain LMP.