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
Marie Stopes Private Services

Throughout our network of specialised clinics, Marie Stopes UK offers a wide range of private treatments and consultation services for both men and women.  

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