Estimate your baby's due date, how far along you are, and key pregnancy milestones — from your last period, conception date, or IVF transfer. Everything runs entirely in your browser.
Naegele's rule: due date = first day of last period + 280 days (40 weeks).
A standard cycle is 28 days. We adjust the estimate if yours differs.
These dates are estimates only — pregnancies naturally vary and only about 4% of babies arrive on the exact due date. Always confirm with your doctor or midwife.