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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Funded abortion care for Northern Irish women travelling to England.

Call Centre photo of staff

We will call you back at a time suitable for you 24hrs a day, 7 days a week


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We're always looking for passionate people to join our team and champion reproductive choice.

Marie Stopes Door from Brixton Centre


If you do not qualify for NHS-funded treatment or wish to not use the NHS, you can decide to use our services privately.


Welcome to Marie Stopes UK

Everyone deserves the right to choose.

We have been helping women and men with their reproductive options for over 40 years. We provide NHS-funded as well as self-funded treatment through our network of local clinics all over the UK.

Your health and wellbeing is our biggest priority. While you are in our care, we will always make sure you're treated with dignity, respect and that you feel supported.

You can give us a call whenever you need us. Our booking and advice line is available 24 hours a day, 7 days a week.


How we can help