ToolPronto
Pregnancy due-date estimator
Estimate a due date and broad timeline from LMP, conception or a known due date.
Pregnancy due-date estimator
Estimated due date
- Estimated window starts
- February 22, 2027
- Estimated window ends
- March 22, 2027
- Estimated weeks
- 6
- Additional days
- 5
- Second trimester starts
- September 7, 2026
- Third trimester starts
- December 14, 2026
- Reference date
- July 18, 2026
How it was calculated
2026-06-01 + 280 d + (28 − 28) dPregnancy due-date estimator
Estimate a due date and broad timeline from LMP, conception or a known due date. Your entries stay in this browser and are never included in analytics. Dating is an estimate; use the date established by a qualified prenatal-care professional.
Pregnancy due-date estimator — How it was calculated
- Estimate a pregnancy due date from a last menstrual period date.
- Compare a date entered from conception or an ultrasound estimate.
- Review the estimated window while relying on prenatal care for clinical dating.
How it was calculated
- Estimate a due date and broad timeline from LMP, conception or a known due date.
- Your entries stay in this browser and are never included in analytics.
- Dating is an estimate; use the date established by a qualified prenatal-care professional.