Universal Pregnancy Calculator – Due Date & Weekly Tracker | Free USA Tool

Calculate Pregnancy & Baby’s Due Date

Get your personalized pregnancy timeline, weekly tracker, and baby development insights with our advanced pregnancy calculator – trusted by millions of expecting parents across the USA.

👶

Due Date Calculator

📅

Weekly Tracker

🍊

Baby Size Guide

Pregnancy & Due Date Calculator

Calculate Based On:

First Day of Last Menstrual Period:

Average Cycle Length:

Your Pregnancy Results

Due Date:

Current Week:

Days Until Due:

Trimester:

Conception Date:

Baby Development

This Week’s Development:

Pregnancy Progress

Conception 1st Trimester 2nd Trimester 3rd Trimester Due Date

Your Pregnancy Timeline

1st Trimester

• Morning sickness may begin

• First prenatal appointment

• Neural tube development

• Heart begins beating

• First ultrasound (8-12 weeks)

2nd Trimester

• Anatomy scan (18-22 weeks)

• Feel baby’s first movements

• Gender reveal possible

• Glucose screening test

• Baby’s hearing develops

3rd Trimester

• Baby shower time

• Nursery preparation

• Hospital bag packing

• Group B strep test

• Labor signs to watch

Share Your Results

Share your pregnancy journey with family and friends!

Everything You Need to Know About Pregnancy Calculators

How Accurate Are Due Dates?

Only about 5% of babies are born on their exact due date. Most babies arrive within 2 weeks before or after the estimated date. Our calculator provides the most accurate estimate based on your specific information.

Multiple Calculation Methods

Our advanced calculator supports Last Menstrual Period, Conception Date, IVF Transfer Date, and Ultrasound Date methods for maximum accuracy based on your situation.

Mobile Optimized

Use our pregnancy calculator on any device. Fully responsive design ensures perfect functionality on smartphones, tablets, and desktop computers.

Weekly Pregnancy Tracking

Track your pregnancy week by week with detailed information about baby’s development, your body changes, and important milestones throughout your journey.

Baby Size Comparisons

Visualize your baby’s growth with fun fruit and vegetable comparisons. See how your little one develops from a poppy seed to a watermelon!

Personalized Insights

Get personalized pregnancy timeline, trimester milestones, and development insights tailored to your specific due date and pregnancy stage.

Frequently Asked Questions

How is my due date calculated?

Your due date is calculated by adding 280 days (40 weeks) to the first day of your last menstrual period. This method assumes a 28-day cycle and is the standard used by healthcare providers worldwide.

Can my due date change?

Yes, your healthcare provider may adjust your due date based on ultrasound measurements, especially if done in the first trimester. Early ultrasounds can provide more accurate dating than LMP calculations.

What if I have irregular periods?

If you have irregular periods, the conception date or ultrasound methods may be more accurate. Our calculator allows you to input your specific cycle length for better accuracy.

Is this calculator accurate for IVF pregnancies?

Yes! Our calculator includes specific IVF calculations for both Day 3 and Day 5 transfers, which are often more accurate than LMP-based calculations for IVF pregnancies.