Pregnancy Calculator

Select any method to estimate your due date

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Pregnancy Information & Resources

How Does the Calculator Work?

Our due date estimator uses proven medical formulas to calculate your estimated delivery date (EDD). By entering just one key date from your pregnancy journey, the calculator automatically determines your due date, current pregnancy week, conception date, and generates a personalized pregnancy calendar.

due date estimator
pregnancy calendar

Calculating Your Due Date

Your estimated due date can be calculated using several methods: Last Period Method (add 280 days to LMP), Conception Date Method (add 266 days), Ultrasound Dating, and IVF Transfer calculations. While only 5% of babies arrive exactly on their due date, 80% are born within 2 weeks.

calculate baby delivery date
gestational age

Due Date Accuracy

Due date accuracy depends on several factors. For women with regular 28-day cycles, LMP-based calculations are about 95% accurate when confirmed with first-trimester ultrasound. Early ultrasounds (6-10 weeks) can predict EDD within ±3-5 days.

due date accuracy
pregnancy timeline