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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Women > Abortion > Abortion facts

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To enquire or book a vasectomy or request a call back, please fill in the form below and we will respond to your procedure enquiry as quickly as we can.

We can answer any questions you have about treatment, book appointments, and confirm whether you're eligible for NHS treatment and whether you can self-refer. 

Your enquiry will be confidential – your details are stored securely and will not be shared with any external parties. If you provide both a telephone number and email address, please specify which you would prefer to be used by our team when responding to your enquiry.

If your query is regarding Marie Stopes abortion services, please click here.

*Please note that calls are recorded for quality and training purposes.