Wellness Room · Bench
Pregnancy Due Date
Estimate your due date & week
Naegele's rule (280 days). Always confirm with a healthcare provider.
About this bench
About Pregnancy Due Date
Estimate a pregnancy due date and current gestational week from the first day of the last menstrual period. The result is a planning estimate, not medical advice.
Input
Enter only the measurements or dates requested by the calculator and check that the units are correct.
Result
A general educational estimate calculated locally from the formula described below.
Limits
Population formulas cannot diagnose an individual or replace clinical measurements, symptoms, medical history or professional care.
How to use Pregnancy Due Date
- 01Enter the first day of your last period.
- 02Read the estimated due date.
- 03See the current pregnancy week.
- 04Confirm details with your doctor.
Frequently asked questions
Is this an exact date?
No — it's an estimate; your healthcare provider gives the most accurate dates.
Is my data private?
Nothing is uploaded. This tool runs entirely in your browser, so your data is processed on your own device and never sent to a server.