Does Pregnancy Week upload my file or text to Tool-You servers?

No. Pregnancy Week runs in this browser tab. Files stay on the device. Limit note: Runs locally in the browser. Invalid input disables or fails visibly. Not medical/legal advice where noted.

Should I use Due Date instead of Pregnancy Week?

Use Pregnancy Week when you need Gestational age from LMP. Use Due Date when you need Naegele due date from LMP. They share a category (Health) but not the same job.

What are the limits of Pregnancy Week?

Runs locally in the browser. Invalid input disables or fails visibly. Not medical/legal advice where noted. Also: Week+day from last menstrual period. Optional as-of date. Due date ≈ LMP+280d. Not medical advice.

Pregnancy Week

Gestational age from LMP.

Week+day from last menstrual period. Optional as-of date. Due date ≈ LMP+280d. Not medical advice.

What Pregnancy Week does

Week+day from last menstrual period. Optional as-of date. Due date ≈ LMP+280d. Not medical advice.

Practical limit for Pregnancy Week: Runs locally in the browser. Invalid input disables or fails visibly. Not medical/legal advice where noted. That is why output can differ from heavy desktop Health software. Read the tool-specific note again: Week+day from last menstrual period. Optional as-of date. Due date ≈ LMP+280d. Not medical advice.

How to use Pregnancy Week

Confirm you need Pregnancy Week, not Due Date (Naegele due date from LMP.). Address: /health/pregnancy-week.
Enter the numbers or dates Pregnancy Week uses. Gestational age from LMP.
Read the result as Pregnancy Week defines it — not as Pregnancy Weight Gain (IOM-style gain range by pre-BMI and week.). Week+day from last menstrual period. Optional as-of date. Due date ≈ LMP+280d. Not medical advice.
Pregnancy Week is an estimate in the browser, not professional advice. Runs locally in the browser. Invalid input disables or fails visibly. Not medical/legal advice where noted.
Need a different formula? Try Pregnancy Weight Gain (IOM-style gain range by pre-BMI and week.) instead of stretching Pregnancy Week.

When not to use Pregnancy Week

Skip Pregnancy Week when a neighbor tool matches better — start with Due Date or Pregnancy Weight Gain — or when the description already warns the job will fail. In the tool’s own words: Week+day from last menstrual period. Optional as-of date. Due date ≈ LMP+280d. Not medical advice.

Questions about Pregnancy Week

What does Pregnancy Week do that other Health pages on this site do not?: Week+day from last menstrual period. Optional as-of date. Due date ≈ LMP+280d. Not medical advice. Short version: Gestational age from LMP.
Does Pregnancy Week upload my file or text to Tool-You servers?: No. Pregnancy Week runs in this browser tab. Files stay on the device. Limit note: Runs locally in the browser. Invalid input disables or fails visibly. Not medical/legal advice where noted.
Should I use Due Date instead of Pregnancy Week?: Use Pregnancy Week when you need Gestational age from LMP. Use Due Date when you need Naegele due date from LMP. They share a category (Health) but not the same job.
What are the limits of Pregnancy Week?: Runs locally in the browser. Invalid input disables or fails visibly. Not medical/legal advice where noted. Also: Week+day from last menstrual period. Optional as-of date. Due date ≈ LMP+280d. Not medical advice.