Question 1

How accurate is the due date calculator?

Accepted Answer

Our due date calculator uses established medical formulas for high accuracy. The LMP method is about 95% accurate, conception date calculation is 98% accurate, and IVF due date calculator is 99% accurate. However, only about 5% of babies are born on their exact due date, so our pregnancy calculator provides estimates to help with planning.

Question 2

What if my periods are irregular?

Accepted Answer

For irregular periods, our due date calculator recommends using the conception date method if you know it, or consult with your healthcare provider. The LMP calculation works best with regular 28-day cycles. Our pregnancy week calculator can still help track your progress once you have a baseline date.

Question 3

How do I calculate due date from IVF transfer?

Accepted Answer

Our IVF due date calculator makes it easy! Select 'IVF Transfer Date' method, enter your transfer date, and choose embryo type (3-day or 5-day). The due date calculator automatically adjusts for embryo development time, giving you the most accurate IVF pregnancy due date possible.

Question 4

Can I use ultrasound measurements?

Accepted Answer

Yes! Our ultrasound calculator is perfect for this. Enter your ultrasound date and the gestational age shown (e.g., '7 weeks 2 days'). The due date calculator will work backwards to determine your baby due date based on fetal development measurements from your ultrasound.

Question 5

What is the difference between LMP and conception date methods?

Accepted Answer

Our due date calculator offers both methods: LMP calculation adds 280 days from the first day of your last period, while conception date calculation adds 266 days from conception (typically 2 weeks after LMP). Both due date calculation methods give similar results for regular cycles, but our pregnancy calculator lets you choose the method that works best for your situation.

Question 6

How do I know how many weeks pregnant I am?

Accepted Answer

Our pregnancy week calculator automatically shows your current pregnancy week and days. Simply enter your information using any of our due date calculation methods (LMP, conception, IVF, or ultrasound), and our pregnancy calculator will display your exact pregnancy weeks and days until your baby due date.

Question 7

Is the due date calculator free to use?

Accepted Answer

Yes! Our free online due date calculator is completely free to use. You can access our pregnancy calculator anytime to calculate your due date, track pregnancy weeks, and view pregnancy milestones without any cost or registration required.

Question 8

Can I use the calculator for twins or multiple pregnancies?

Accepted Answer

Our due date calculator works for all pregnancies, including twins and multiples. The due date calculation methods remain the same, but keep in mind that multiple pregnancies often deliver earlier than single pregnancies. Our pregnancy calculator gives you the estimated due date, but your healthcare provider will monitor your specific situation.

Due Date Calculator

Welcome to Your Pregnancy Journey

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Multiple Calculation Methods

Pregnancy Week Tracking

Pregnancy Milestones

Due Date Countdown

Medical Accuracy

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