Pregnancy Week-by-Week Tracker

Enter the last period date and Pregnancy Week-by-Week Tracker computes the weeks and days pregnant directly on the page, so you can adjust assumptions and watch the result follow.

1. 1

   Step 1

   Type the required health measurements.

2. 2

   Step 2

   Hit "Calculate" and the result is computed automatically.

3. 3

   Step 3

   You can re-run the calculation with different values anytime.

• 1

  Enter the last period date in the units each label names: Pregnancy Week-by-Week Tracker computes the weeks and days pregnant from those values as written, and one mismatched unit moves every downstream number while the result still looks plausible on screen.

• 2

  Test scenarios one at a time: change the last period date while the rest stay fixed and the movement in the weeks and days pregnant is attributable to that single change, which turns Pregnancy Week-by-Week Tracker into a comparison tool, not a one-shot answer.

• 3

  Save the input set beside each result before closing the page: when your numbers change, Pregnancy Week-by-Week Tracker only needs the moved fields re-entered, and the documented assumptions keep the old and new outputs comparable.

• A unit slip in the last period date: Pregnancy Week-by-Week Tracker computes the weeks and days pregnant from the value as written, so a figure entered in the wrong scale gives an arithmetically correct answer to a different question; confirm the unit first.

• Copying the output and discarding the inputs: a bare result cannot be audited later, because the page has no memory of yesterday's entries — the assumptions travel with the number or the number is worthless in a month.