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Pregnancy Due Date Calculator

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NHS Due Date Calculator Difference

How many weeks pregnant am I?  when is my pregnancy due date?

This is one of the most common things not only our patients say but reports also show that this is one of the most common initial questions for NHS midwives. This is is why we have tried help by creating a calculator similar to the NHS due date calculator – you can access that by clicking here.

The calculator on this page differs in from the NHS one in that not only can it help you work out an estimate of when your baby will be due, how many weeks pregnant you currently are but also the likely date of conception and the full range of pregnancy services available to you at your current stage of pregnancy.

Typical pregnancies last from between 37 weeks to 42 weeks from the first day of your last period with a regular cycle period of 28 days.

To find out your due date and other useful information, use the drop down menus below to enter the date of the first day of your last period, and choose cycle period (leave at 28 days if your cycle is regular , or enter the number of days typically in your cycle) and click on the ‘calculate due date’ button and we will do the rest

Please bear in mind the purpose of the calculator is to assist you in providing an estimate of your due date and other information based on the last period date you enter and these dates may change as your pregnancy progresses and you have ultrasound scans, etc. If you are unsure of this or any other information please discuss with your midwife or health care professional.

Find the right pregnancy scans for you based on how many weeks pregnant you are..

To help find the scan or service available for you, please start by providing the number the number of weeks/months pregnant you are or if your not sure enter the first date of your last menstrual period.

I am

weeks pregnant


..or choose the first day of your last period

Fact Check Information

The Scan Clinic is committed to providing accurate and objective educational content about health and medical related topics. We know that there is a lot of misinformation out there, and we take our responsibility to be a trustworthy source of information seriously. Every article on our site is thoroughly fact-checked by our team of writers.

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