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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We are so grateful for all the support that we receive everyday from people who proudly stand with us and stand up for what we do. There are so many ways to get involved with Marie Stopes UK. With your help, we can ensure that women in the UK and all over the world access their choice of abortion and contraceptive services.

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At Marie Stopes UK, we believe that all women should feel confident about the decisions they are making when it comes to their bodies and their lives. 

Choice is fundamental to everything that we do. We respect the right of women to decide whether and when to have children. It's about what is most suitable for each individual and for each couple; we give them the information they need to make their own choices. 

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