Due Date Calculator
The same method Your Doctor uses.
Built on the same formula doctors use to estimate due dates. Free, accurate, and ready in 30 seconds; no sign-up needed, no waiting.
Find Your Expected Due Date in Seconds
Our simple due date calculator helps you work out your expected delivery date in seconds. Just enter the date of your last period, conception, IVF transfer, or most recent ultrasound, and get a dependable estimate of when your little one may arrive, so you can follow your pregnancy journey with confidence.
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From the Posts
Naegele’s Rule Explained
Naegele’s rule is the formula behind almost every due date calculator. It turns the first day of your last menstrual period (LMP) into an estimated due date (EDD).
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IVF Due Date Calculator
Conceived through IVF? Then your due date works differently from a standard calculation.
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How Accurate Are Due Date Calculators
A due date calculator does its math accurately. The real uncertainty lies elsewhere. Nobody can predict exactly when labor will start.
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Why Your Due Date Can Change After an Ultrasound
Your due date may change after your first ultrasound. Maybe a home calculator gave you one date, based on your last menstrual period (LMP).
Read more
What Happens When Pregnancy Goes Overdue
Passing your due date is more common than it feels. A due date marks the middle of a normal range. It isn’t a deadline.
Read more
Pregnancy Questions Centre
Every parent-to-be has doubts, and that is completely normal. This Pregnancy Questions Center gathers the most searched pregnancy questions in one place, so you can find reliable answers fast.
Read more
Due Date Cal
Want to understand the numbers behind your results? Our blog breaks down the science in plain English. Learn how Naegele’s rule works, why your due date can shift after an ultrasound, and what a normal ovulation window looks like.
Every article links back to trusted sources like ACOG, the NHS, and the Mayo Clinic, so you’re never left guessing. Browse the latest articles and find the story behind your numbers.
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