Pregnancy Calculator

Track your pregnancy journey with our real-time calculator. Estimate your due date, conception date, and key milestones.

Calculate Your Pregnancy Timeline

28 days

Your Pregnancy Progress

Select your dates to see visualization

About This Pregnancy Calculator

Welcome to our free Pregnancy Calculator, a comprehensive tool designed to help expectant parents track their pregnancy journey with precision and ease. This advanced calculator provides real-time estimates of your due date, conception date, and key pregnancy milestones.

How Does the Pregnancy Calculator Work?

Our calculator uses well-established medical formulas to estimate important dates in your pregnancy:

  • Due Date Estimation: Calculated as 280 days (40 weeks) from the first day of your last menstrual period (LMP)
  • Conception Date: Estimated to occur approximately 11-21 days after your LMP
  • Trimester Calculation: Breaks down your pregnancy into three important phases
  • Fetal Development: Tracks key milestones based on gestational age

Why Use Our Pregnancy Calculator?

This tool offers numerous benefits for expectant parents:

  • Accurate Estimates: Get reliable due date predictions to plan ahead
  • Milestone Tracking: Understand what to expect at each stage of your pregnancy
  • Health Awareness: Track important prenatal checkup schedules
  • Real-time Updates: See how your pregnancy progresses day by day
  • Completely Free: No signup required, no hidden costs

Important Considerations

While this calculator provides valuable estimates, remember:

  • Only 5% of babies are born exactly on their due date
  • Actual conception date can vary based on your cycle
  • Always consult with your healthcare provider for personalized medical advice
  • This tool is for informational purposes only

Track your pregnancy journey with confidence using our advanced calculator. Get started today by entering your information above!

Frequently Asked Questions

How accurate is the pregnancy due date calculator?

Our calculator provides estimates based on standard medical calculations. Typically, due dates are accurate within ±5 days when the last menstrual period date is certain. However, only about 5% of babies are born exactly on their due date.

Can I use this calculator if I have irregular periods?

The calculator works best with regular cycles. If your cycles are irregular, we recommend using conception date if known, or consulting with your healthcare provider for a more accurate due date estimation through ultrasound.

What's the difference between gestational age and fetal age?

Gestational age is measured from the first day of your last menstrual period (LMP), while fetal age (also called embryonic age) starts from conception. Gestational age is typically about two weeks ahead of fetal age.

How are the trimesters calculated?

Pregnancy is divided into three trimesters:

  • First trimester: Week 1 to the end of week 12
  • Second trimester: Week 13 to the end of week 26
  • Third trimester: Week 27 to the end of pregnancy

Is this calculator suitable for IVF pregnancies?

For IVF pregnancies, we recommend using the embryo transfer date as your conception date. This will provide the most accurate due date calculation. If using transfer date, select the "Conception Date" method in the calculator.