Free · Health · Pregnancy & Cycle
Due Date Calculator
Estimate a pregnancy due date from last menstrual period, conception, or embryo-transfer date.
- Checked formula
- Private in your browser
- No signup
Result
Your calculation
- Estimated due date
- Sunday, November 8, 2026
- Estimated conception
- Sunday, February 15, 2026
- 37-week milestone
- Sunday, October 18, 2026
- 42-week milestone
- Sunday, November 22, 2026
A clinician should document the best obstetric estimate using menstrual, conception, and ultrasound information.
How to use this calculator
- Enter current measurements as accurately as practical.
- Calculate to see the estimate, range, and method details.
- Use the result as context, and discuss health decisions with a qualified clinician.
Use the result with context
Health results are educational estimates, not a diagnosis or treatment recommendation. A qualified clinician can interpret measurements in the context of your health.