When is my baby due, and what comes next?
Due date and antenatal timeline
Work out your due date from your last period, conception, IVF transfer or dating scan, or work back to when you conceived. See Singapore’s check-ups by week and your leave and Baby Bonus dates.
New to this? Read the short guide first →
Step 2 Your result
Your due date and the weeks left:
Typical check-ups and screens
Typical windows only. Your doctor or midwife decides your own schedule.
Leave and support dates
Worked out as if baby arrives on the due date. The actual birth date moves them.
Use this due date in other tools
- Confinement countdown checklist: every pre-birth task dated to it.
- Parental leave planner: how long you can both be at home.
- Baby Bonus + CDA maximiser: the support for your birth date.
- Delivery bill estimator: the cash to set aside for the hospital bill.
What this timeline assumes
Non-diagnostic planning dates, not yet reviewed by a clinician. The due date is 280 days after the first day of your last period, adjusted for your cycle length. NHS says to adjust for cycle length but does not give the rule. We move the date one day for each day your cycle is longer or shorter than 28 days. It is 266 days after conception, 263 or 261 days after a day-3 or day-5 embryo transfer, or 40 weeks from a dating scan. Check-up and screening windows are typical timings published by HealthHub, KKH and NUH; your doctor decides your actual schedule and may change your due date after the dating scan. Leave dates use MOM's rules for births from 1 April 2025, and support dates follow LifeSG; both assume baby arrives on the due date. Your due date stays on this device. Verify with HealthHub, MOM maternity leave and LifeSG. Checked .
Step 3 What next
Can I eat this when I’m pregnant?Read the guideWhen is my baby due, and what happens before the birth? →Common questions
How do you work out when we conceived?
Conception is taken as the day you ovulated. With a 28-day cycle, NHS puts that around day 14, so about 266 days before the due date. NHS says ovulation happens 10 to 16 days before the next period, so we show that range. Sperm can survive up to 7 days, so the sex that led to it may have been up to a week earlier.
How is my due date worked out?
From the first day of your last period, the due date is 280 days later, moved later or earlier by the difference between your usual cycle and 28 days. From a known conception date it is 266 days later. After IVF it is 263 days after a day-3 embryo transfer or 261 days after a day-5 transfer. From a dating scan it is 40 weeks counted from how far along the scan said you were. Your doctor may change it after your dating scan.
Are these check-up weeks the same for everyone?
No. They are the typical timings that HealthHub, KKH and NUH publish. Your doctor or midwife decides your own schedule, and some mothers need tests earlier or more often.
When can maternity leave start?
By default, Government-Paid Maternity Leave starts 4 weeks before the birth. With your employer's agreement you can start any day in those 4 weeks, up to the birth itself. Tell your employer at least 4 weeks before you start.