Pregnancy Date Calculator
Estimate a pregnancy due date and current week.
Use last menstrual period or known conception date.
The calculator applies common pregnancy dating assumptions.
It is informational and should not replace medical guidance.
Estimated due dateOctober 8, 2026
Approximate pregnancy week24
This is a general pregnancy date estimate and is not medical advice. Confirm dates with a qualified clinician.
About this calculator
What it estimates
- Enter last menstrual period or conception date
- See an estimated due date
- View an approximate week of pregnancy
Important notes
- LMP mode adds 280 days; conception mode adds 266 days.
- Pregnancy week is estimated from gestational age.
- Ultrasound dating, cycle length, and medical history can change the clinical due date.
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