How to Measure Angle in AutoCAD: Quick Guide

Updated 11 November 2026 · Standard formula, shown below

This guide shows you how to measure angles in AutoCAD using the built-in measuring tools. You’ll learn the fastest methods for finding the angle between two lines, the angle of a single line, or the included angle of a polyline or arc. No prior experience is needed beyond basic AutoCAD navigation.

What You’ll Need

AutoCAD (any recent version) with a drawing open that contains the geometry you want to measure.
Basic familiarity with selecting objects and using the command line.
Object snaps (OSNAP) enabled for precise selection – press F3 to toggle them on if needed.

Step-by-Step

Method 1: Using the MEASUREGEOM Command (Quickest)

Type MEASUREGEOM in the command line and press Enter. Alternatively, click the Measure drop-down in the Home tab’s Utilities panel and choose Angle.
In the command line, you’ll see options: Distance, Radius, Angle, Area, Volume. Type A (for Angle) and press Enter.
You are now prompted to Select a line, arc, circle, or specify three points.
- To measure the angle of a single line (its angle from the X-axis): click directly on the line. The angle will appear in the command line and as a temporary dimension on screen.
- To measure the angle between two lines: click the first line, then click the second line. The angle between them is displayed.
- To measure an angle defined by three points (e.g., a corner): type P for “Points” and press Enter. Then click the vertex point, then the two endpoints that define the angle. The angle is measured counterclockwise from the first endpoint to the second.
Read the result from the command line or the dynamic dimension that appears near your cursor. The angle is reported in degrees (or in the current angular unit, e.g., grads or radians if you’ve changed that setting).

Method 2: Using the LIST Command (For Existing Objects)

Type LIST (or LI) and press Enter.
Select the line, polyline segment, or arc whose angle you want to know, then press Enter.
In the text window that pops up, look for “Angle” for a line (this is the angle from the X-axis) or “Start angle” and “End angle” for an arc. For a polyline, you’ll see the angle of each segment.

Method 3: Using the DIMANGULAR Command (For a Permanent Dimension)

Type DIMANGULAR (or DAN) and press Enter.
Select the first line, then the second line (or select an arc).
Move your cursor to where you want the dimension text to appear and click. The angle is now permanently displayed as a dimension, which updates if you change the geometry.

Method 4: Using the PROPERTIES Palette

Select the line or arc whose angle you need.
Press Ctrl+1 to open the Properties palette.
Under “Geometry,” you’ll see “Angle” for a line (the angle from the X-axis) or “Start angle” and “End angle” for an arc. For a polyline, select the segment and its angle appears.

Common Mistakes

Not enabling Object Snaps: Clicking near a line endpoint without OSNAP can select the wrong point, giving a wrong angle. Always snap to endpoints, intersections, or midpoints.
Misreading the angle direction: AutoCAD measures angles counterclockwise from the X-axis by default. If your drawing uses a different orientation, the displayed angle might not match your expectation.
Selecting the wrong object: When measuring between two lines, ensure you click on the lines themselves, not on a dimension or a text object near them.
Forgetting to switch from Distance mode: If you type MEASUREGEOM and just click two points without choosing “Angle,” you’ll get a distance instead. Always select the Angle option.

Tips

Use the ANG command (a shortcut for MEASUREGEOM’s angle subcommand) if you want to skip the menu – type ANG and press Enter.
To change the angular unit (degrees, radian, grad), type UNITS and press Enter. In the Drawing Units dialog, set the “Angle” type to your preference.
If you need the angle relative to a specific line (not the X-axis), use the three-point method and pick the vertex and endpoints accordingly.
For a quick read, the dynamic dimension that appears while using MEASUREGEOM is often enough – you don’t need to write it down.

Troubleshooting

No angle appears after selecting lines: Make sure you pressed Enter after typing MEASUREGEOM and that you selected the Angle option. If you’re using the three-point method, ensure you clicked three distinct points in the correct order (vertex first, then the two endpoints).
The angle seems wrong (e.g., 90° instead of 270°): AutoCAD reports the smaller angle between two lines (0–180°) when you select two lines directly. For a reflex angle, use the three-point method and pick points in a counterclockwise order.
Object snaps not working: Press F3 to toggle OSNAP on, or right-click the OSNAP button at the bottom and select “Settings” to check which snaps are enabled. Ensure “Endpoint” and “Intersection” are checked.
MEASUREGEOM command not found: This command is available in most AutoCAD versions, but if it’s missing, use the DIMANGULAR command instead – it achieves the same result with a permanent dimension.
Angle is displayed in radians instead of degrees: Change the angular units via UNITS command. Set “Angle type” to “Decimal Degrees” and “Precision” to your desired level.

Frequently Asked Questions

How do I measure the angle between two lines in AutoCAD?

Use the MEASUREGEOM command, choose the Angle option, then click the first line and the second line. The angle between them is displayed immediately.

Can I measure an angle in degrees, minutes, seconds?

Yes. Type UNITS and set the “Angle type” to “Degrees/Minutes/Seconds” (or “Surveyor’s Units” for bearing). The measurement will then display in that format.

How do I measure the angle of an arc?

With MEASUREGEOM > Angle, click directly on the arc. AutoCAD will show the included angle of the arc (the angle subtended by the arc at its center).

What is the difference between MEASUREGEOM and DIMANGULAR?

MEASUREGEOM gives a temporary measurement that disappears after you finish the command. DIMANGULAR creates a permanent dimension object that remains in the drawing and updates if the geometry changes.

How do I measure the angle of a line relative to another line, not the X-axis?

Use the three-point method in MEASUREGEOM: pick the vertex (intersection point), then pick a point on the first line, then a point on the second line. The angle is measured counterclockwise from the first point to the second.

Why is my angle measured in radians even though I want degrees?

Check your drawing units. Type UNITS and ensure the “Angle” section is set to “Decimal Degrees” (or another degree format). If you’re using a template that uses radians, change it there.

Method: the standard formula for this calculation, rounded as each result states. See how the calculators work or report an error.