Your pregnancy at a glance
A timeline lists weeks; a calendar shows how they fall on real dates. Enter your due date (or the first day of your last period) and this calculator draws every month of your pregnancy as a calendar. Each day is coloured by trimester, the first day of every pregnancy week is labelled (W4, W5…), and your due date and today are highlighted. Hover over or tap a day to see exactly how far along you are on it.
Reading the calendar
| Colour | Meaning |
|---|---|
| Pink | First trimester (to 13 weeks 6 days) |
| Lavender | Second trimester (14 weeks to 27 weeks 6 days) |
| Mint | Third trimester (28 weeks to birth) |
| Outlined | Your due date |
Because pregnancy weeks start on the weekday your last period began, they won’t line up with calendar weeks — the W labels show where each one begins.
Ways to use it
- Print it and mark appointments, scans and classes.
- Share it with a partner or family so everyone knows the key dates.
- Plan work, travel and leave around trimesters — see also the Prenatal Calculator for typical test windows.
Prefer a list? The Pregnancy Timeline shows the same weeks with notes on what typically happens in each.