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Estimate a due date from the first day of the last menstrual period or a conception date. Optional cycle length adjusts the LMP estimate. See gestational age, trimester, countdown, and progress. Educational only—not medical advice.
This tool provides a general estimate for educational purposes and is not medical advice. Due dates are estimates only. Consult a qualified healthcare professional for personal guidance.
Enter a date to estimate the due date and pregnancy progress.
Use the Pregnancy Due Date Calculator form near the top of this page. Enter the values you know, run the tool, and review the results panel. You can change inputs and run it again. Processing stays in your browser and is not uploaded to Utilnivo servers.
Example: open Pregnancy Due Date Calculator, enter a realistic set of inputs for your situation, and note the primary result. Change one input—such as an amount, rate, or option—and compare how the output changes so you can choose a scenario that fits your needs.
Enter the first day of the last menstrual period (LMP) or a conception date. For LMP, an optional cycle length adjusts Naegele’s rule (280 days from LMP on a 28-day cycle). The calculator estimates due date, gestational age, trimester, and days remaining. Results are educational estimates only and are not medical advice.
This tool provides a general estimate for educational purposes and is not medical advice. Due dates are estimates only. Consult a qualified healthcare professional for personal guidance.
From the last menstrual period (LMP), the estimate uses 280 days for a 28-day cycle, adjusted by cycle length. From conception, it uses 266 days.
Gestational age is counted from the estimated LMP in weeks and days, and is used to determine the trimester and progress percentage.
No. Results are educational estimates only. Confirm dates and care plans with a qualified healthcare professional.