Free Pregnancy Tool
Enter your due date and any date to see what pregnancy week, day, and trimester you'll be at. Perfect for planning travel, appointments, and milestones.
Use the due date confirmed by your midwife or dating scan.
Pick any date - past, present, or future - within the pregnancy.
Please enter a valid due date.
Built for dads & partners
Stop asking. Stop guessing.
Open the app and you're caught up - week by week, until your baby is here.
$4.99 · One-time · Yours forever
A pregnancy date lookup answers one simple question: what week will we be at on a specific date? Enter your due date and any date - a holiday, a scan appointment, a work trip - and it instantly shows the pregnancy week, day, and trimester on that day.
Pregnancy is counted as 280 days from the first day of the last menstrual period. Your due date marks day 280. This tool works backwards from that date to find where any given calendar day falls in the timeline. Week display runs from 0 to 39. Trimesters follow the clinical week: first trimester is weeks 1–13, second is 14–27, third is 28–40.
Knowing the week ahead of time helps you show up prepared. Planning a babymoon in trimester two? Scheduling a scan around week 20? Wondering if you'll still be in the first trimester for a family event? A quick lookup saves the guesswork and keeps you connected to the pregnancy timeline.
Everything you need to know about looking up pregnancy weeks for a specific date.
Enter your due date and the date you want to check. The calculator works backwards from your due date using the standard 280-day pregnancy model to find your week, day within that week, and trimester on that date.
Yes. Enter your due date and the date of your trip, scan, or appointment to see exactly what week and trimester you'll be in. This helps you plan around milestones and know what to expect at that point in the pregnancy.
The first trimester covers medical weeks 1–13, the second trimester weeks 14–27, and the third trimester weeks 28–40. Enter your due date and lookup date above to see your trimester on that day.
Yes. You can enter any date within the pregnancy window - past, present, or future - to see what week and trimester applied on that day. Dates before the start of pregnancy or well after the due date will show an error.
This tool uses the same 280-day pregnancy model used by midwives and obstetricians worldwide, calculated from your confirmed due date. For any clinical decisions, always consult your healthcare provider.