Due Date Calculator - Free Online Tool

Our Due Date Calculator provides accurate estimates of your expected due date by utilizing multiple reliable methods, ensuring you have the most comprehensive timeline possible. You can input various starting points depending on how your pregnancy was conceived or monitored.

Simply select the method that best matches your medical records: Last Menstrual Period (LMP), which is a common estimate; Conception Date, if you know it precisely; an IVF Transfer Date, crucial for assisted reproductive technology tracking; or an Ultrasound Measurement, often the most precise method. Once you input your starting date and select the corresponding calculation type, the tool immediately generates your estimated due date (EDD), along with key milestone dates like the start of each trimester.

• LMP: Calculates based on ovulation timing.
• Ultrasound: Uses measured fetal size for maximum accuracy.

Reviewing these dates helps you track not just the due date, but also when to expect certain developmental milestones.

To get the most accurate and useful results from this calculator, preparation is key. Gather all relevant dates—especially any records detailing an IVF transfer or specific ultrasound measurements—before you begin.

When reviewing your calculated timeline, cross-reference the milestones we provide with reputable sources like ACOG guidelines. For example, if the tool indicates a critical screening date in the second trimester, use that window to schedule an appointment with your provider immediately.

• Keep Records: Maintain a dedicated pregnancy journal and save screenshots of important dates generated by this tool.
• Understand Variation: Remember that while the EDD is helpful, babies often arrive within a two-week window before or after the calculated date. This variation is normal!

Use this tool as an organized planning aid to keep all your critical dates in one place.