Health & fitness
Pregnancy Due Date Calculator
Estimate due date, current pregnancy age, and days remaining from LMP or conception date.
Interactive calculator
Estimate pregnancy due date
Use your last menstrual period or conception date to estimate due date, current pregnancy week, and time remaining.
Results
Pregnancy estimate
Enter valid dates
Reference date must be today or earlier.
How to use it
- 01Choose whether you are estimating from last menstrual period or conception date.
- 02Enter the reference date and, for LMP mode, your average cycle length.
- 03Review the due date, current week, and time remaining estimate.
Result guide
- The due date is an estimate, not a guaranteed delivery date.
- Cycle length matters mainly when the estimate is based on last menstrual period.
- For medical interpretation, prenatal guidance should still come from a clinician.
About this calculator
Due-date pages are useful because most people want a quick estimate first before moving into more detailed appointment and pregnancy-tracking tools.
This calculator keeps the scope clear: date-based estimation, not medical diagnosis or fetal assessment.
Frequently asked questions
Is the due date exact?
No. It is an estimate based on common gestational timing assumptions.
Why offer both LMP and conception methods?
Because some people know their cycle history better, while others know a probable conception date more confidently.
Can this replace prenatal care?
No. It is a planning estimate only and should not replace clinical advice or scans.
Method and limitations
This calculator uses the formula and assumptions described on this page. We do not claim independent professional review. Direct references will be listed here when they support a specific rule or data source used by this calculator.
Results are estimates for general information. Verify current rules and assumptions before making financial, tax, or health decisions.
Read our Editorial and Verification Policy →Related calculators
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