AreaSum
Get started

Set the scale

Two clicks on a known dimension and every measurement on the page is right.

In this series: Getting started
  1. Upload a PDF and choose pages
  2. Set the scale
  3. Draw a room
  4. Correct a wall length
  5. Draw on a blank page

Getting started · 2 of 5 · Video recorded October 2026 · Steps checked 20 October 2026

Steps

  1. Click Set Scale in the action bar.
  2. Find the longest dimension written on the page. A long one gives a more accurate scale than a short one.
  3. Click one end of the dimension line, then the other. Hold Space and drag to pan if the far end is off screen.
  4. Type the real length, choose mm or m, and press Enter.
  5. Scale is per page. Set it again on every page you measure.
  6. Got it wrong? Click Reset Scale and pick the two points again.

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