Free Online Angle Measurement Tool — Measure Angles in Any Image
Measure angles in any image with our free online angle measurement tool. Simply click three points on your image — vertex, first arm, second arm — and the tool calculates the exact angle in degrees. Perfect for designers, photographers, or anyone needing precise angle measurements on images. All processing happens locally in your browser.
Upload an image to measure angles on.
Click three points: vertex, then two arm points to define the angle.
View the calculated angle in degrees.
Tips for Using the Angle Measure
- Zoom in on detailed areas for more precise point placement.
- The angle is calculated as the smaller angle between the two lines.
- Use the clear button to remove the current measurement and start a new one.
Frequently Asked Questions — Angle Measure
Is the angle measurement tool free?
Yes, completely free. No registration, no hidden charges, and no file size limits. All processing happens locally in your browser.
How does angle measurement work?
You click three points: the vertex and two arm points. The angle is calculated using the dot product between the two vectors.
What units are used?
Angles are displayed in degrees, ranging from 0° to 180°.
Can I measure multiple angles?
One measurement at a time. Click 'Clear Measurement' to start a new one.
What image formats are supported?
All common image formats are supported: JPEG, PNG, WebP, GIF, BMP, TIFF, and more.
How accurate is the measurement?
Accuracy depends on the precise placement of your clicks and image resolution.
What can I use angle measurement for?
Checking building angles in photos, measuring geometric shapes, or verifying design alignment.