CI Due date calculator

This due date calculator helps expectant mothers estimate when their baby will arrive. It works by inputting either the first day of your last menstrual period or the date of conception. The tool then provides an estimated due date, current week of pregnancy, trimester, and baby size.

• Quick and easy input: Enter either your last period date or conception date. The calculator also supports IVF transfer dates and ultrasound dates.
• Detailed results: See your estimated due date, current gestational week, trimester, and approximate baby size and weight.
• Pregnancy week calendar: View a breakdown of each week with key milestones, such as when the heartbeat becomes detectable or when the baby starts moving.
• Multiple calculation methods: Choose from LMP date, conception date, IVF transfer date, or ultrasound measurement to get the most accurate estimate for your situation.
• No personal data stored: The calculator runs entirely in your browser, so your information remains private and is not saved or shared.