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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I don’t know if I can manage or want a baby

If you're pregnant and unsure whether you want or could manage to care for a baby, Marie Stopes United Kingdom can help you assess your choices and make the right decision – for you.

Marie Stopes UK provides a confidential counselling service for women and men relating to a wide range of issues including relationships, self-esteem, grief, pregnancy and abortion. Counselling gives you a non-judgemental and safe space to discuss what you're experiencing. 

If you're pregnant, and the pregnancy is unplanned, you may be feeling a wide range of emotions. It's important to face what's happening and seek advice as soon as possible. It's also important that you make the right decision for yourself; this might not always be the decision your friends or family would make.

You might feel unable to talk to those closest to you, or that you won't get impartial support from them. This is where counselling can really help. Marie Stopes' team are highly qualified to help you explore the choices that you think might be best for you, with empathy and understanding. If you're pregnant, these are:

  • Continue with the pregnancy and become a parent.
  • Continue with the pregnancy and consider adoption or fostering.
  • End the pregnancy through abortion.

If you'd like to arrange counselling, you can book by calling 0345 300 8090.

Counselling is available for free if you're having other treatment at Marie Stopes UK. Alternatively, you can pay for stand-alone counselling. Find out more about our fees.