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

What is abortion?

An abortion is the deliberate medical process of ending a pregnancy. An abortion is also known as a 'termination' or 'termination of pregnancy'. 1 in 3 women will have an abortion in her life time.

Every woman has the right to make her own choice about whether to terminate or continue with a pregnancy. If a woman feels that an abortion is in her or her family's best interests, then she should have access to safe, supportive and non-judgmental advice and help.

Methods of abortion

At Marie Stopes UK, we offer two kinds of abortions: surgical abortion and medical abortion.

Medical abortion

Medical abortion involves taking two sets of tablets to end a pregnancy. It's available before 9 weeks of pregnancy. Find out more about medical abortion

Surgical abortion 

Surgical abortion involves a local or general anaesthetic and/or sedation, and a minor operation to remove the pregnancy tissue. Find out more about surgical abortion

Which abortion method is right for me?

Your gestation (how many weeks pregnant you are), past medical history, gynaecological history, medications and personal choice will determine which method is best for you. We advise you to speak with your GP, or call us on anytime on 0345 300 8090 (24 hrs) to talk through all of your options.

Abortion treatment at Marie Stopes UK

Marie Stopes offers both medical and surgical abortion treatments - with minimum waiting time for appointments whether you're having NHS or private treatment.

NHS abortion treatment

Depending on where you live in the UK, and if you have an NHS number, you can have either medical or surgical abortion treatment funded by the NHS - please call us on 0345 300 8090 (24 hrs) to find out if you're eligible.

Private abortion treatment

Alternatively, you can choose to pay for private, non-NHS funded abortion treatment. Find out more about Marie Stopes private abortion. Find our more about Marie Stopes UK fees for private treatment. 

Need to talk about your options?

Our specialist staff are on hand 24/7 to offer expert advice and support – from your initial consultation to treatment aftercare.

Call us now on 0345 300 8090 (24 hrs), request a call back or email us at services@mariestopes.org.uk

Stories that matter 

Read our stories that matter page where you will find personal stories sent by women who have had an abortion.