You may not know that the duration of your period and ovulation make up the first two weeks of your pregnancy. It's understandable if you're a little confused, especially if your cycle is longer or shorter than the average 28-day cycle.

Although most pregnancies last 40 weeks, there are other factors to consider when determining your expected due date. Using the date of your last period and the length of your cycle, our calculator will quickly help you estimate your due date. This takes into account the length of your cycle, whether it's average, shorter, or longer.

If you're sure of your conception date, you can also use that date. Our calculator takes into account the first two weeks of your period and ovulation.

Follow these three simple steps to calculate your due date:

1. Start by determining the first day of your last period and the average length of your cycle. This is the length of time between the first day of one period and the first day of your next period. If you're sure of the exact day of conception, you can also use this date.

2. Enter the requested dates into the calculator.

3. Then, click Start Calculation!

Remember, this is an estimate and not a fixed date. After all, every pregnancy is unique.