Due or born in July: when was the baby conceived?
A baby due in July was most likely conceived between 8 October and 7 November of the year before.
For a baby born in July at full term, from 37 to 42 weeks, conception was most likely between 24 September and 28 November of the year before.
Most likely conception date
Enter a date to see when conception most likely happened.
Not medical advice. Every pregnancy is different: ask your midwife or doctor about yours.
Conception date for each day in July
| Due date or birthday | Conception, for a due date | Conception, for a birth at 37 to 42 weeks |
|---|---|---|
| 1 July | 8 October | 24 September to 29 October |
| 2 July | 9 October | 25 September to 30 October |
| 3 July | 10 October | 26 September to 31 October |
| 4 July | 11 October | 27 September to 1 November |
| 5 July | 12 October | 28 September to 2 November |
| 6 July | 13 October | 29 September to 3 November |
| 7 July | 14 October | 30 September to 4 November |
| 8 July | 15 October | 1 October to 5 November |
| 9 July | 16 October | 2 October to 6 November |
| 10 July | 17 October | 3 October to 7 November |
| 11 July | 18 October | 4 October to 8 November |
| 12 July | 19 October | 5 October to 9 November |
| 13 July | 20 October | 6 October to 10 November |
| 14 July | 21 October | 7 October to 11 November |
| 15 July | 22 October | 8 October to 12 November |
| 16 July | 23 October | 9 October to 13 November |
| 17 July | 24 October | 10 October to 14 November |
| 18 July | 25 October | 11 October to 15 November |
| 19 July | 26 October | 12 October to 16 November |
| 20 July | 27 October | 13 October to 17 November |
| 21 July | 28 October | 14 October to 18 November |
| 22 July | 29 October | 15 October to 19 November |
| 23 July | 30 October | 16 October to 20 November |
| 24 July | 31 October | 17 October to 21 November |
| 25 July | 1 November | 18 October to 22 November |
| 26 July | 2 November | 19 October to 23 November |
| 27 July | 3 November | 20 October to 24 November |
| 28 July | 4 November | 21 October to 25 November |
| 29 July | 5 November | 22 October to 26 November |
| 30 July | 6 November | 23 October to 27 November |
| 31 July | 7 November | 24 October to 28 November |
In a leap year, the date moves by one day when 29 February falls between conception and the due date or birth.
Frequently asked questions
If our baby is due in July, when did we conceive?
A baby due in July was most likely conceived between 8 October and 7 November of the year before. That is 38 weeks (266 days) before the due date. The table on this page gives the date for each due date in the month.
Born in July: when was the baby conceived?
For a baby born in July at full term, from 37 to 42 weeks, conception was most likely between 24 September and 28 November of the year before. For a birth at exactly 40 weeks, it is the same date as for a due date that day.
Can a conception date settle a paternity question?
No. This is the textbook estimate. It cannot know your cycle, when you actually ovulated or how the pregnancy was dated, and it is not precise enough to tell apart two dates a few days apart.