Pregnancy calculator: easily calculate your week of pregnancy now!
The first weeks of pregnancy are full of emotions, curiosity, and questions. What week of pregnancy am I in? When is my due date? How is my baby developing?
A pregnancy calculator gives you guidance and helps you to consciously experience each phase of your pregnancy.
In this article, we'll show you how a pregnancy calculator works, why it's so valuable – and how you can use it optimally for yourself.
What is a pregnancy calculator?
A pregnancy calculator is a simple but incredibly helpful tool that calculates your week of pregnancy (WP) and estimated due date (EDD) based on just a few details.
The most important inputs are:
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First day of your last period (LP)
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Average cycle length (often 28 days)
Based on this information, the calculator determines where you are in your pregnancy.
Why is a pregnancy calculator so practical?
1. You get immediate clarity.
Especially in the beginning, it's difficult to accurately estimate your own week of pregnancy. The calculator provides you with clear figures – without the stress of calculations.
2. You can track your baby's development
Every week of your pregnancy is full of new wonders. A calculator shows you what stage your baby is currently in and what developmental milestones are typical.
3. Doctor's appointments and planning become easier
Whether it's preventative medical check-ups, holiday planning or parental leave: knowing which week you're in makes everything clearer.
4. Motivation & Anticipation
Many pregnant women love to see the coming weeks and milestones:
First trimester complete , kicks felt , belly growing visibly , maternity leave begins …
This is how your week of pregnancy is calculated
Pregnancy is calculated – somewhat surprisingly – from the first day of the last period , not from the actual fertilization.
That means:
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In weeks 1 and 2 of pregnancy, you are not actually pregnant yet.
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The actual fertilization usually only takes place in week 3 of pregnancy .
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The estimated due date is 40 weeks after the first day of the last menstrual period .
Pregnancy calculator
Enter the first day of your last period:
