Pregnancy Calculator UK – Due Date & Trimester Tool

When is your baby due?

First day of your last menstrual period:

Average cycle length (optional):

days

Most women have cycles between 21-35 days. Default is 28 days.

Date of conception:

🎉 Your Pregnancy Journey

💕

Baby's Due Date

Pregnancy Timeline

1st Trimester

Weeks 1-12

2nd Trimester

Weeks 13-26

3rd Trimester

Weeks 27-40

Important Milestones

Did You Know?

🌿 Support Your Pregnancy Journey

Ensure you and your baby get the essential nutrients needed for a healthy pregnancy with our premium prenatal vitamins.

Shop Fruitful Vitamins

Find Out Your Estimated Due Date with Fruitful®

Curious about when your baby might arrive? Our easy-to-use pregnancy calculator can help you estimate your due date and track your pregnancy week by week.

Whether you're early on or already a few weeks in, this tool gives you a helpful overview of your journey, all based on simple details you already know.

How the Fruitful® Pregnancy Calculator Works

Pregnancy is typically measured from the first day of your last menstrual period (LMP), even if conception occurs a couple of weeks later. That’s because it can be diﬃcult to know the exact moment of ovulation or fertilisation.

To calculate your estimated due date (EDD), simply enter:

· The first day of your last period

· Or your estimated conception date

You’ll instantly see how far along you are and when your baby is most likely to arrive.

FAQ

What If I Donʼt Know My Exact Conception Date?

That’s completely normal. Conception doesn't always happen on the day you have sex. Sperm can live inside the body for up to five days, and the egg can survive for up to 24 hours. This gives you a fertile window of around six days. Our calculator uses this timeframe along with your cycle length to give you a clear, helpful estimate.

Will My Baby Be Born on That Exact Date?

The date from our Pregnancy Calculator is an estimate based on your last period or conception date. Most babies arrive within a window of about two weeks before or after that date, so it’s completely normal if your little one decides to make an early or fashionably late entrance. Think of it as a helpful guide rather than a guarantee. Your body and baby will let you know when the time is right :)

Can My Due Date Change?

Yes, it can! Your due date is an estimate based on your last period or conception date but as your pregnancy progresses, your healthcare provider may adjust it after ultrasounds or check-ups. Every pregnancy is unique and your baby’s growth and timing can shift the estimate a little, all completely normal. Think of your due date as a helpful guide to prepare, rather than an exact deadline.

How Long Can Pregnancy Last?

A typical pregnancy lasts around 40 weeks, but it’s normal for babies to arrive anywhere between 37 and 42 weeks. Every pregnancy is unique, so some little ones come early while others take their time. Your body and baby know their own rhythm and your healthcare provider will guide you through each stage to help you feel supported along the way.

Take the next step with Fruitful®

Now that you have your estimated due date, you can feel more prepared for the journey ahead. Explore our Trimester Guide, discover helpful tips and see which Fruitful® supplements are formulated to support you and your baby at every stage.

Take the next step with Fruitful®

Now that you know your due date, it’s a great time to start supporting your body with the right nutrients. Explore our Pregnancy Support range, thoughtfully formulated to nourish you and your baby through every stage.

Take the first step with Fruitful® for a healthier, more confident pregnancy journey.

Shop Pregnancy Support

Pregnancy Trimester Guide

Your pregnancy is a journey of three stages, each with its own changes and milestones.

Our Trimester Guide walks you through every trimester, from what to expect and how your baby is developing to nutrition tips and support along the way.

VIEW GUIDE