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Maternal

EDD & Gestation

In clinical review, locked

The NurseTools EDD and gestation tool is planned to estimate a due date and gestational age in weeks and days. It is in clinical review, locked, and not available yet.

The formula

Naegele's rule: first day of the last menstrual period + 280 days (40 weeks).

What the tool will cover

  • Planned: estimated due date from the last menstrual period.
  • Planned: gestational age in weeks and days on a chosen date.
  • Planned: sources, version and review date on the tool.

Status

This tool is in clinical review and locked. It is not available in NurseTools yet, and nothing unlocks it early. It is released only after it clears all four gates:

  1. Source and rights audit. Every formula and reference is traced to its source and licensed for use.
  2. Clinical editorial review. A reviewer with the right specialty signs off on the content.
  3. Independent testing. Known-answer tests cover normal values, edge cases and unit mix-ups.
  4. Regulatory and App Store review. Higher-risk tools wait for the right approval route before release.

How NurseTools reviews clinical content

Learn the math: How to Calculate a Due Date (EDD) and Gestational Age

Questions

Can I use the EDD and gestation tool in NurseTools now?

No. The EDD and gestation tool is in clinical review and locked. It becomes available only after it passes source review, clinical editorial review, independent testing and App Store review. Nothing unlocks it early.

Is the date from the last period the final due date?

Not always. Professional guidance treats first-trimester ultrasound as the most accurate way to set or confirm the due date.

Will the tool store pregnancy details?

No. NurseTools never asks for patient information and does not store it.

Educational tool. Verify with your facility protocols, provider orders and scope of practice.

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