Pregnancy Due Date Calculator
Estimate your due date and current week of pregnancy
Enter a date to calculate.
Based on the standard 280-day (40-week) estimate. Actual due dates vary: your healthcare provider's estimate (especially from an early ultrasound) is more accurate than this calculation alone.
Reading results never uses a trial use. Copying, saving or printing uses 1 per visit.
About Pregnancy Due Date Calculator
Estimates a pregnancy due date from the first day of your last menstrual period (the standard 280-day method, adjusted for your cycle length), or from a known conception date or IVF embryo transfer date, and shows how far along you are.
Choose what you know: your last period, a conception date, or an IVF transfer date. Enter the date and, for a last period, your usual cycle length if it is not 28 days. The due date, progress and trimester dates are calculated.
This is a standard estimate used as a starting reference point — an ultrasound-based estimate from your care provider is generally more accurate for your actual situation, especially if your cycle isn't a typical 28 days.
Watch: Pregnancy Due Date Calculator in Action
- How accurate is this compared to what my doctor tells me?
- This is a standard estimate used as a starting reference point — an ultrasound-based estimate from your care provider is generally more accurate for your actual situation, especially if your cycle isn't a typical 28 days.
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