Measure Area and Path

Click on the Measure Area and Path tool (or M + A) to activate the tool. As you move your cursor you will notice the following:

Procedural models will not have highlighted faces. This is a known limitation.

Start measuring

Click on a face, edge or vertex to create a starting point for measuring a path or an area. As the tool moves through objects and terrain, the tool fades to indicate that it is hidden behind that surface.


As you move the cursor, you will notice the following:


As you create the path, press Enter at any point to close the path to the starting point to display the area and total length of the path, also referred to as the perimeter. An orange checkered polygon highlights the area on the plane that make up the points.

When the points are not on the same plane, a vertical or horizontal plane will display depending on the angle of the plane for the polygon:

Vertical plane

For a vertical plane, a vertical polygon will display through the first point and an estimated center of all the points. In addition, if there is horizontal distance between the starting point and the other points, a solid orange horizontal line will display the distance between the starting point and the point furthest away from it.

Horizontal plane

For a horizontal plane, a horizontal polygon will display through the highest point. In addition, if there is vertical distance between the points, a solid orange vertical line will display the distance between the lowest point and the highest point.

The longest side will display the perimeter of the polygon. Once the path is closed and the area and perimeter is displayed, you can press Ctrl+Z or Ctrl+Y to cycle forward and backward through all previous results of polygon areas and perimeters.

There is a known limitation with self-intersecting polygons displaying incorrect areas.

Navigate your scene as you measure

Use the modifier navigation shortcuts to rotate/ tilt, dolly/zoom, and track/pan the scene as you move the cursor.

The Measure Area and Path tool is still visible when it is blocked by buildings, terrain, and other 3D objects. The tool fades similarly as it does when going through objects and is hidden behind the surface.

Reset tool

At any point you wish to start the measurement over, press Esc. This will remove the current path. Click again to start measuring.

Adjust the measurements

Adjust either point to change distances. Hover near the point to activate the option to move the point either by dragging the ball and or pulling the handles.

Snap to another space, edge, face, or vertex

Click on the ball to move the point to snap to geometry edges, faces, or vertices that are highlighted when you get close.

Move the point along either the x, y, or z axis

Drag the x, y, z handles to move along the x, y, or z axis.

As you move along these axes the point may move away from the geometry it was snapped to. To snap back to the geometry, click on the ball and the snapping options will appear again.

Change the measuring units

You can change the units by changing the coordinate system in the viewport.

  1. Click View→View coordinate system.
  2. Choose a coordinate system and the tool will reflect the unit of that coordinate system.

Copy your measurement

You can copy out your measurements by accessing the Log.

  1. Click Window→Show Log to open the Log.
  2. Double click the entry with your measurement and the Event Details menu opens.
  3. Copy and paste the measurements to another document.

See also


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