1. What is the Due Date Calculator?

The Baby Due Date Calculator estimates your expected delivery date based on your last menstrual period (LMP) and calculates your current pregnancy week. It uses the standard 280-day (40-week) pregnancy duration.

2. How Does the Calculator Work?

The calculator uses two simple formulas:

Where:

• LMP — First day of your last menstrual period
• Current Date — Today's date or any date you want to check
• 280 days — Standard duration of pregnancy (40 weeks)

Explanation: The calculation assumes a regular 28-day menstrual cycle with ovulation occurring on day 14.

3. Importance of Due Date Calculation

Details: Knowing your due date helps in prenatal care planning, monitoring fetal development, and preparing for delivery. It also helps identify if the pregnancy is progressing normally.

4. Using the Calculator

Tips: Enter the first day of your last menstrual period and the current date (or any date you want to check). The calculator will show your estimated due date and current pregnancy week.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this due date calculation?
A: The calculation is accurate for women with regular 28-day cycles. Only about 5% of women deliver on their exact due date.

Q2: What if my cycle isn't 28 days?
A: For irregular cycles, an ultrasound dating scan in the first trimester provides more accurate dating.

Q3: What is considered full term?
A: 39-40 weeks is full term. 37-38 weeks is early term, and 41-42 weeks is late term.

Q4: Can the due date change?
A: Yes, healthcare providers may adjust the due date based on early ultrasound measurements.

Q5: What's the most accurate way to determine due date?
A: First-trimester ultrasound (especially between 8-12 weeks) is the most accurate method.