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

You are here

Caring for you during your visit

We are committed to giving you excellent care and will do all we can to make your time with us as comfortable as possible. Our receptionists, nurses, call-centre agents, healthcare assistants and doctors uphold our mission and values every day by supporting women who are visiting us for treatment.

Respect for you

We ensure that every woman who visits is treated with dignity and respect. If you feel you need additional or more support, our staff are on hand to help. If you would like a member of staff to accompany you in your consultation we are more than happy to arrange this.

Your safety

From the moment you arrive at one of our locations your safety during your visit is a priority for all our staff. All our standards of care are aligned to the Care Quality Commission’s Fundamental Standards Regulations as well as the Health and Social Care Act. We are committed to continually improving our service and treatments to ensure effectiveness for our clients. All our locations meet the requirements of the Health and Safety at Work Act and associated regulations including the Regulatory Reform (Fire and Safety) Order 2005 and other relevant legislation

Experienced care

All staff employed by Marie Stopes UK are registered and professionally trained. From our nurses, assistants to our surgeons, we ensure all our staff are fit for their role, and kept up to date with all the latest training and requirements of the Health and Social Care Act 2008 as well as the Department of Health Standard Operating Procedures for termination providers.

Through our experience and knowledge of providing abortion services across England, we are aware of the relevant legal and regulatory requirements to provide abortion services for women. We maintain effective working membership and/or relationships with key organisations with the UK to ensure our standards are kept at their highest. To ensure best practice, we work closely with organisations such as:

Your Feedback

As the UK’s leading reproductive health charity Marie Stopes UK aims to provide the best possible service and care to all our clients. Any feedback is extremely appreciated and valued by our staff. Should you wish to contact us regarding any positive or negative feedback please do not hesitate to contact us using the email services@mariestopes.org.uk, or you can use our contact form. For more information please visit our Feedback page.