When is the baby due? Find out, no app, no account.
Two lines on the test, and the first question is always: when? When is the due date, what week am I in, when is the anatomy scan, when can I plan parental leave. This calculator answers all of that in your browser, in 5 seconds.
Your dates never leave this page. No sign-up, no account, no "confirm your email". Nothing is sent to Google, Facebook, or any "cloud database". The page loads once, from that point on everything happens locally on your device. You can even turn off Wi-Fi and the calculator keeps working.
You choose what to base it on: the first day of your last period (most common), the date of conception (if you know it precisely), or the date of an IVF embryo transfer. We show: the exact due date, what week you are in today, the next important scans, and key milestones along the way.
How to use it
- Pick a method at the top, most often it is the first day of your last period (this is what doctors use by default). If you used IVF, pick the transfer option instead.
- For "last period": enter the first day (not the middle of the cycle) and set your cycle length, 28 days is the average; if your cycle is, say, 32 days, the calculator adjusts.
- For "conception date": enter the day you know conception happened (e.g. confirmed ovulation window).
- For IVF: enter the transfer date and pick whether the embryo was 3 or 5 days old (your clinic will tell you, usually 5).
- You see the result immediately: due date, current week, progress, upcoming scans and milestones. There is no "submit" button, everything stays on your device, locally.
When this is useful
Six situations where this calculator actually helps:
- You found out you are pregnant today and need a date: first OB-GYN visit is in two weeks. You want to know now: what week am I in, when is the scan, when is the due date. No installing a pregnancy app, no email signup, no traces left on the internet.
- Planning parental leave: work needs to know when you go on leave. The due date minus a few weeks is roughly when leave usually starts. You get the number here, without typing it into any company system you do not control.
- Checking when the anatomy scan is: it has to be done in a specific window. The calculator shows the exact start and end dates so you can book early enough.
- You did IVF and need a date: IVF clinics calculate differently from "natural" pregnancies because they know exactly when the transfer happened. Enter the transfer date and embryo age, and you get a more precise due date than the standard Naegele's rule gives.
- Private check, no ad-funded pregnancy app: most "free" pregnancy apps sell your data to advertisers; pregnant women are one of the most valuable advertising audiences online. Here, nothing is sent anywhere.
- Partner / mum / friend wants to know: show them the result on the screen. The page URL contains no personal data, you can safely share the link without revealing anything about your pregnancy plans.