Pregnancy Calculator – Calculate Your Due Date
Pick the method that matches what you know.
Estimated Due Date
Pregnancy Milestones
Pregnancy Calculator FAQ
How does a pregnancy calculator work?
A pregnancy calculator estimates your pregnancy due date and current pregnancy week using information such as your last menstrual period, conception date, ultrasound dating, IVF transfer date, or a known due date.
How accurate is a pregnancy due date?
A due date is an estimate rather than an exact prediction. Pregnancy length can vary, and your healthcare professional may adjust the estimated due date based on clinical information and ultrasound dating.
What if my menstrual cycle is longer or shorter than 28 days?
The calculator can adjust the estimated due date based on your usual cycle length. If you are unsure, 28 days is commonly used as the default.
Can an ultrasound change my estimated due date?
Ultrasound dating can provide additional information about pregnancy timing. Your healthcare professional can determine whether the estimated due date should be changed.
Is this pregnancy calculator a substitute for medical care?
No. This calculator provides an estimate for informational purposes. Pregnancy dating and medical decisions should be discussed with a qualified healthcare professional.
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