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.



We are here to support you 24 hours a day, 7 days a week

Call us now on 0345 300 8090 or email services@mariestopes.org.uk

0345 300 8090

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24 hour support for private clients

Our exclusive helpline is available 24/7 so that you’re never more than a phone call away from our qualified healthcare professionals.

Call us on 0345 300 1202 anytime ( or 0044 1454 457542 from abroad).

Whether you are calling in because you are after peace of mind or would like tips for a fast recovery after your abortion; we are here for you 24 hours a day 365 days a year. You will be able to speak to one of our nurses if you have any questions or concerns.

If you don’t speak English

Because your physical health and mental wellbeing are our biggest priorities.