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Abortion Date Calculator Online

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The Abortion Date Calculator helps estimate the best timeframe for an abortion based on the gestational age. It calculates the potential date of conception and provides an estimated range for when an abortion can be performed, considering legal and medical guidelines.

Formula of Abortion Date Calculator

To calculate the abortion date, you need to determine the gestational age and then subtract it from the current date. Here is the basic formula:

Determine the gestational age: Gestational age is typically measured from the first day of the last menstrual period (LMP). It is usually expressed in weeks.

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Subtract the gestational age from the current date: This gives you the date of conception, which can help in estimating the abortion date.



  • LMP be the first day of the last menstrual period.
  • GA be the gestational age in weeks.
  • CD be the current date.

The date of conception (DC) can be calculate as:

DC = CD - (GA * 7 days)

To find the abortion date (AD), which is typically perform within a specific range of weeks (for example, up to 12 weeks in some places):

AD = LMP + (Maximum Weeks Allowed * 7 days)

Pre-Calculated Values for Common Searches

Here is a table with pre-calculated values for common gestational ages and maximum weeks allowed for abortion. This can help you find the information quickly without having to do the calculations yourself.

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Last Menstrual Period (LMP)Gestational Age (GA) in WeeksDate of Conception (DC)Maximum Weeks AllowedEstimated Abortion Date (AD)
January 1, 20244 weeksJanuary 29, 202412 weeksApril 1, 2024
February 1, 20246 weeksMarch 15, 202412 weeksMay 1, 2024
March 1, 20248 weeksApril 26, 202412 weeksJune 1, 2024

Example of Abortion Date Calculator

Let us go through an example to see how this calculation works in practice.

Suppose the first day of the last menstrual period (LMP) was March 1, 2024. The current date (CD) is June 1, 2024. The gestational age (GA) is 13 weeks.

  1. Calculate the date of conception (DC): DC = CD - (GA * 7 days) DC = June 1, 2024 - (13 * 7 days) DC = March 1, 2024
  2. Calculate the abortion date (AD), assuming the maximum weeks allowed is 12 weeks: AD = LMP + (Maximum Weeks Allowed * 7 days) AD = March 1, 2024 + (12 * 7 days) AD = May 24, 2024
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Most Common FAQs

What is gestational age and how is it calculate?

Gestational age is the age of the pregnancy measure from the first day of the last menstrual period (LMP). It is usually express in weeks.

How accurate is the abortion date calculator?

The accuracy depends on the accuracy of the input dates. It is always best to consult with a healthcare professional for precise information.

What are the legal limits for abortion?

Legal limits for abortion vary by location. It is important to check local laws and consult with a healthcare provider.

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