How Do You Measure an Angle in SketchUp?

Measuring angles accurately is an essential skill when working with SketchUp. Whether you are designing architectural structures or creating 3D models for a game, having the ability to measure angles precisely will ensure that your projects are accurate and visually appealing. In this tutorial, we will explore different methods to measure angles in SketchUp using various tools and techniques.

Using the Protractor Tool

The Protractor tool in SketchUp allows you to measure angles between lines or surfaces. To access this tool, navigate to the “Tools” menu and select “Protractor.” Alternatively, you can use the keyboard shortcut “P” to activate the Protractor tool.

Step 1: Select the Protractor tool from the toolbar or press “P” on your keyboard.

Step 2: Click on one endpoint of the angle you want to measure.

Step 3: Click on the other endpoint of the angle.

Step 4: Move your cursor to see a protractor-like guide that displays the angle measurement. The measurement is displayed both numerically and visually on your screen.


  • If you want to measure an angle that forms with a specific axis, hold down the Shift key while selecting endpoints. This ensures that SketchUp aligns with either red, green, or blue axes while measuring angles.
  • To adjust or fine-tune an angle measurement, click and drag either endpoint of the protractor guide until you achieve your desired result.

Using Angular Dimensions

Sometimes, it is necessary to display angle measurements directly on your model for better visualization or documentation purposes. SketchUp provides an Angular Dimensions tool that enables you to measure and display angles.

Step 1: Navigate to the “Tools” menu and select “Angular Dimensions.”

Step 2: Click on three points on your model to define the angle. The order of selection determines the direction of the angle measurement.


  • To measure an angle that is not aligned with any axis, click once to define the vertex and twice to define two rays forming the angle.
  • You can edit and modify angular dimensions by double-clicking on them. This allows you to change their position, appearance, or even delete them entirely.

Using Plugins for Advanced Angle Measurement

Sometimes, you may require more advanced angle measurement capabilities that are not available in SketchUp’s native tools. Fortunately, there are several plugins available that can enhance your ability to measure angles accurately.

TIG Protractor Plugin:

The TIG Protractor plugin is a powerful tool that provides additional options for measuring angles in SketchUp. It allows you to measure angles between faces, edges, or even arbitrary lines. The plugin also provides accurate readouts in both degrees and radians.

FredoTools Angle Tool:

The FredoTools extension offers a wide range of tools for SketchUp users, including an Angle Tool. This tool allows you to measure angles between edges or faces with ease. It also provides options for displaying measurements in different formats and units.


  • Before installing any plugins, ensure they are compatible with your version of SketchUp.
  • Plugins can significantly enhance your workflow but remember to exercise caution and only download from reputable sources.

By utilizing the Protractor tool, Angular Dimensions, and plugins, you can accurately measure angles in SketchUp for all your modeling needs. Whether you are an architect, designer, or hobbyist, understanding how to measure angles will help you create precise and visually appealing 3D models.