Gestation Calculator

This calculator has been designed to give you an idea of the treatment options available to you*. If you decide to have an abortion with Marie Stopes UK, one of our nurses will give a more approximate gestation date during your appointment by way of a scan.
*Please note that this online calculator will only give you an estimated gestation based on the details you have provided.

Please select the first day of your last menstrual period.



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Is a medical abortion the morning after pill?

The medical abortion, or the abortion pill, is not the same as the ‘morning after pill’.

The ‘morning after pill’ is an emergency contraceptive to prevent pregnancy. It can be taken up to 96 hours (5 days) after unprotected sex. It is a progesterone-only hormone pill and works by delaying the release of an egg from an ovary, therefore preventing pregnancy. There is just one pill to take.

A medical abortion, or abortion pill, are tablets you take to end an existing pregnancy. A person will take the two sets of pills, orally, over two visits which causes the passing of the pregnancy.