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Pregnancy Due Date Calculator
Calculate estimated baby delivery due date, conception timeframe, and gestational age using Naegele’s Rule.
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Interactive Pregnancy Due Date Calculator Workspace
Solver Sandbox: This is a premium sandbox template for **Pregnancy Due Date Calculator**. The calculations are pre-configured to estimate variables. Below is the responsive form.
Mathematical Formula & Variables
Equation Model
Due Date = First Day of Last Period + 280 Days (40 Weeks)Standard clinical Naegele rule adding 280 days to last menstrual period.
Variable Definitions
| Symbol | Description |
|---|---|
| LMP Date | First day of last menstrual period |
How to Use the Pregnancy Due Date Calculator
- Select the first day of your last menstrual period (LMP) or conception date.
- Select average cycle length.
- Calculate estimated delivery due date, trimester milestones, and current week of pregnancy.
Practical Example Calculation
Scenario Context: Last menstrual period started January 15th.
Step 1: Add 1 year (Jan 15 next year), subtract 3 months (Oct 15), add 7 days = October 22nd.
Step 2: Total gestation period: 280 days / 40 weeks.
Estimated Baby Due Date: October 22nd.
Frequently Asked Questions
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