Pregnancy Calculator
Calculate your pregnancy weeks, due date, and track your baby's development with our comprehensive pregnancy calculator.
About This Pregnancy Calculator
Our pregnancy calculator estimates your due date, current pregnancy week, and baby's development based on your last menstrual period. This tool uses standard obstetric calculations to provide pregnancy timeline information, baby size comparisons, and important milestones throughout your pregnancy journey.
Frequently Asked Questions
The pregnancy calculator provides estimates based on standard formulas using your last menstrual period. However, only about 5% of babies are born on their exact due date. Ultrasound dating is much more accurate, especially when performed in the first trimester.
Pregnancy is typically measured in weeks plus days. For example, '20 weeks and 3 days' means you've completed 20 full weeks and are 3 days into your 21st week. This precise measurement helps healthcare providers track development milestones.
Healthcare providers use the last menstrual period (LMP) because it's easier to remember than the exact conception date. This method adds about 2 weeks to the actual conception age, which is why pregnancy is considered 40 weeks instead of 38.
The first trimester is weeks 1-12, second trimester is weeks 13-26, and third trimester is weeks 27-40. Each trimester has different developmental milestones and typical symptoms for both mother and baby.
Baby size comparisons to fruits and objects are educational estimates for visualization. Actual baby sizes vary significantly, and your healthcare provider will monitor growth through ultrasounds for accurate measurements.
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Medical Disclaimer: This tool provides educational estimates based on established formulas and is not intended as medical advice. Individual results may vary. For personalized guidance, consult with healthcare professionals through our platform.