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How to Calculate the Estimated Due Date of Birth (HPL) Accurately, Learn the Formula!

December 13, 2022

How to Calculate the Estimated Due Date of Birth (HPL) Accurately, Learn the Formula!

Most parents are certainly impatient with the birth of a baby, so they find various ways to find out when the little one is born. No need to worry; now there is a way to calculate HPL. HPL is the Estimated Day of Birth, while HPL pregnant is a date you can find out by looking at the gestational age. Knowing the delivery date, of course, you can prepare for pregnancy care in advance. Let’s see the following information here!

How to Calculate HPL Easily and Accurately

There are several methods you can use to determine your due date. For example, from gestational age or consulting a doctor. Knowing this will make it easier for you to find HPL. Although it is relatively straightforward, many people still misunderstand how to calculate HPHT and HPL.

How to Calculate HPL Through Gestational Age

You can learn how to calculate the HPL of birth by finding out how old your pregnancy is. However, there are still many people who miscalculate their gestational age. During this time, people often refer to gestational age as months—for example, 1 month pregnant, 3 months pregnant, and so on. This method of calculating the HPL of pregnancy uses days or how many weeks of HPL. The reason is this is related to your HPHT.

HPHT is the first day of the last menstrual period. Therefore, you should use the month to calculate the HPL. The following is how to calculate HPL from HPHT that you can apply. You can use the date formula on the first day of the last menstrual period + 7 days – 3 months + 1 year. As an example of calculating HPL and gestational age, for example, if your HPT is April 11, 2019, add the next 7 days, which means April 18, 2019.

So, April 18, 2019, is the first week of your pregnancy. After that, subtract 3 months from the last menstrual month, namely January 18 (14th month minus 3). Next, add one year from 2019. Then you can conclude if your HPL was on January 18, 2020.

The way to calculate an accurate HPL is to remember the first and last period of your period and then add 266 days. However, this method will work if your menstrual cycle is expected once every 28 to 30 days.

How to Calculate Your HPL

You can calculate the HPL yourself without going to the doctor. Calculating gestational age can use several formulas, such as the Neagle and Parikh formulas. How to calculate HPL with the Neagle formula only applies to women with smooth or regular menstrual cycles. However, for irregular menstrual cycles, you can use the Parikh formula. Here is the explanation:

HPHT (First Day of Last Menstruation) + 9 months + (length of the menstrual cycle – 21 days).

For example, if your HPHT is March 1, 2019, then the length of your menstrual cycle is 35 days. Then March 1, 2019, you add 9 months, meaning December 1, 2019. After that, you add 35 days and subtract 21 days; the result is 14 days. The conclusion is that your HPL is December 1, 2019, + 14 days, December 15, 2019.

Besides this method, you can also use a birth calculator through the website. You need to remember when your last period occurred. After that, the results will immediately come out. By using a pregnancy calculator, how calculating your HPL can be easier, faster, and also accurate.

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