HealthCalc Hub

Due date for conception in April

A conception in April puts the due date between 23 December and 21 January. The table lists every day.

Pick a date to see your due date.

This calculator gives general information only. It is not medical advice. Talk to a doctor or other qualified health professional about your own health.

How it works

Count 266 days forward from the day of conception. The result is the estimated due date. For April, day 30 maps to 21 January.

Worked example

Start at 15 April. Count 266 days ahead to reach 6 January. Across the whole month the due dates run from 23 December to 21 January. This example assumes a 365-day year.

Estimated due date for each day of April, counting 266 days from the day of conception. The table uses a 365-day year.

Date of conceptionDue date
1 April23 December
2 April24 December
3 April25 December
4 April26 December
5 April27 December
6 April28 December
7 April29 December
8 April30 December
9 April31 December
10 April1 January
11 April2 January
12 April3 January
13 April4 January
14 April5 January
15 April6 January
16 April7 January
17 April8 January
18 April9 January
19 April10 January
20 April11 January
21 April12 January
22 April13 January
23 April14 January
24 April15 January
25 April16 January
26 April17 January
27 April18 January
28 April19 January
29 April20 January
30 April21 January

Common questions

Does the year change the due date?

Only if the span includes 29 February, which moves the date one day earlier. The span from 15 April does not cross February. A leap year changes nothing for 6 January.

How reliable is a due date worked out by month?

It is an estimate, and births spread across the weeks around it. A conception on day 15 of April gives 6 January, with arrivals spread across the weeks around that date.

Which month will my baby be born?

The due date month is a guide, and many births come earlier or later. A conception in April points to December and January.

What if I only know the month?

Use the middle of the month. The due date then falls in the middle of the window. Day 15 of April maps to 6 January.

How many weeks is the gap?

Divide the days by 7 to get weeks. From day 1 of April to 23 December is 266 days, which is 38 weeks.