Due Date Calculator by Last Menstrual Period
Calculate your due date using Naegele’s rule based on your last menstrual period (LMP)
Select a date
Choose the first day of your last menstrual period
Last menstrual period date
| Su | Mo | Tu | We | Th | Fr | Sa |
|---|---|---|---|---|---|---|
This uses Naegele's rule: first day of last period + 7 days - 3 months + 1 year to calculate your due date.
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