Tools

Pregnancy Calculators

Free, medically-referenced tools to help you track your pregnancy journey.

Due Date Calculator

Estimate your due date based on your last period.

First Day of Last Period

Average Cycle Length (days)

How It Works

Your due date is calculated by adding 280 days (40 weeks) to the first day of your last menstrual period. While only about 5% of babies arrive on their exact due date, this estimate helps you and your healthcare provider plan prenatal care milestones. Many Bomee partner studios schedule 3D/4D keepsake ultrasounds between weeks 27–32 for the best baby portraits.

These calculators are for informational purposes only and should not replace professional medical advice. Always consult your healthcare provider for personalized guidance.